diff --git a/examples/before_send_retry.php b/examples/before_send_retry.php
index b6703a8..9be2c6e 100644
--- a/examples/before_send_retry.php
+++ b/examples/before_send_retry.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/coinbase_account_balance.php b/examples/coinbase_account_balance.php
index 45e9b22..23d7a9f 100644
--- a/examples/coinbase_account_balance.php
+++ b/examples/coinbase_account_balance.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/coinbase_btc_spot_price.php b/examples/coinbase_btc_spot_price.php
index a4f2e4b..d04f1ab 100644
--- a/examples/coinbase_btc_spot_price.php
+++ b/examples/coinbase_btc_spot_price.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/coinbase_eth_spot_price.php b/examples/coinbase_eth_spot_price.php
index 334a72c..3c66840 100644
--- a/examples/coinbase_eth_spot_price.php
+++ b/examples/coinbase_eth_spot_price.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/curl_display_curl_option_value.php b/examples/curl_display_curl_option_value.php
index 59e1431..476c569 100644
--- a/examples/curl_display_curl_option_value.php
+++ b/examples/curl_display_curl_option_value.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/curl_display_curl_option_values.php b/examples/curl_display_curl_option_values.php
index 2f71105..d112dc9 100644
--- a/examples/curl_display_curl_option_values.php
+++ b/examples/curl_display_curl_option_values.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/curl_display_curl_option_values_user_set.php b/examples/curl_display_curl_option_values_user_set.php
index 37b2ea2..e447850 100644
--- a/examples/curl_display_curl_option_values_user_set.php
+++ b/examples/curl_display_curl_option_values_user_set.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/curl_progress.php b/examples/curl_progress.php
index b210277..8449575 100644
--- a/examples/curl_progress.php
+++ b/examples/curl_progress.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 // Note: The server needs to send a content-length header for progress to work.
diff --git a/examples/curl_progress_advanced.php b/examples/curl_progress_advanced.php
index 2699c26..8fd1a66 100644
--- a/examples/curl_progress_advanced.php
+++ b/examples/curl_progress_advanced.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 // Note: The server needs to send a content-length header for progress to work.
diff --git a/examples/custom.php b/examples/custom.php
index f8b0585..1b3c978 100644
--- a/examples/custom.php
+++ b/examples/custom.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/delete.php b/examples/delete.php
index ca3e367..6852553 100644
--- a/examples/delete.php
+++ b/examples/delete.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/deviant_art_rss.php b/examples/deviant_art_rss.php
index 16012d3..5888842 100644
--- a/examples/deviant_art_rss.php
+++ b/examples/deviant_art_rss.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/diagnose_request.php b/examples/diagnose_request.php
index 2ceb977..15e955a 100644
--- a/examples/diagnose_request.php
+++ b/examples/diagnose_request.php
@@ -1,4 +1,5 @@
 <?php
+
 // keywords: diagnose, troubleshoot, help
 
 require __DIR__ . '/../vendor/autoload.php';
diff --git a/examples/download_file_with_redirect.php b/examples/download_file_with_redirect.php
index 5217196..ef20517 100644
--- a/examples/download_file_with_redirect.php
+++ b/examples/download_file_with_redirect.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/download_files.php b/examples/download_files.php
index 997e67d..2cb3036 100644
--- a/examples/download_files.php
+++ b/examples/download_files.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/download_files_with_callback.php b/examples/download_files_with_callback.php
index 8120d99..72cfe79 100644
--- a/examples/download_files_with_callback.php
+++ b/examples/download_files_with_callback.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/flickr_photo_search.php b/examples/flickr_photo_search.php
index b8965dd..04dc503 100644
--- a/examples/flickr_photo_search.php
+++ b/examples/flickr_photo_search.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get.php b/examples/get.php
index e0fbd0c..78ff21b 100644
--- a/examples/get.php
+++ b/examples/get.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_base_url_1.php b/examples/get_base_url_1.php
index 5f3bcc7..601c958 100644
--- a/examples/get_base_url_1.php
+++ b/examples/get_base_url_1.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_base_url_2.php b/examples/get_base_url_2.php
index 2164d87..6a8bf44 100644
--- a/examples/get_base_url_2.php
+++ b/examples/get_base_url_2.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_first_n_bytes.php b/examples/get_first_n_bytes.php
index a8655a0..95e7233 100644
--- a/examples/get_first_n_bytes.php
+++ b/examples/get_first_n_bytes.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_pages.php b/examples/get_pages.php
index faf4ade..c398d01 100644
--- a/examples/get_pages.php
+++ b/examples/get_pages.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_relative.php b/examples/get_relative.php
index 8d452e6..68f0804 100644
--- a/examples/get_relative.php
+++ b/examples/get_relative.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_response_cookies.php b/examples/get_response_cookies.php
index 0c67bbf..47ef2e0 100644
--- a/examples/get_response_cookies.php
+++ b/examples/get_response_cookies.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_with_callable_retry.php b/examples/get_with_callable_retry.php
index 9878b74..ea0b61c 100644
--- a/examples/get_with_callable_retry.php
+++ b/examples/get_with_callable_retry.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_with_callable_retry_based_on_http_status_code.php b/examples/get_with_callable_retry_based_on_http_status_code.php
index 14798ef..82baba6 100644
--- a/examples/get_with_callable_retry_based_on_http_status_code.php
+++ b/examples/get_with_callable_retry_based_on_http_status_code.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_with_port.php b/examples/get_with_port.php
index abeae8b..789636f 100644
--- a/examples/get_with_port.php
+++ b/examples/get_with_port.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_with_retry.php b/examples/get_with_retry.php
index 097197a..c060ffb 100644
--- a/examples/get_with_retry.php
+++ b/examples/get_with_retry.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/get_without_downloading_full_error_response.php b/examples/get_without_downloading_full_error_response.php
index cac2b52..21d2589 100644
--- a/examples/get_without_downloading_full_error_response.php
+++ b/examples/get_without_downloading_full_error_response.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/github_create_gist.php b/examples/github_create_gist.php
index 8620bc1..21cfba2 100644
--- a/examples/github_create_gist.php
+++ b/examples/github_create_gist.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/gmail_send_email.php b/examples/gmail_send_email.php
index 8e79ef5..325c4d1 100644
--- a/examples/gmail_send_email.php
+++ b/examples/gmail_send_email.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/google_maps_geocode_address.php b/examples/google_maps_geocode_address.php
index d5bba76..688528c 100644
--- a/examples/google_maps_geocode_address.php
+++ b/examples/google_maps_geocode_address.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/google_plus_profile.php b/examples/google_plus_profile.php
index dd0d95a..77cbf0f 100644
--- a/examples/google_plus_profile.php
+++ b/examples/google_plus_profile.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/google_spreadsheet_values_update.php b/examples/google_spreadsheet_values_update.php
index 2a546d4..28be8bf 100644
--- a/examples/google_spreadsheet_values_update.php
+++ b/examples/google_spreadsheet_values_update.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/gratipay_send_tip.php b/examples/gratipay_send_tip.php
index 78eb923..160d265 100644
--- a/examples/gratipay_send_tip.php
+++ b/examples/gratipay_send_tip.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/head.php b/examples/head.php
index 6317a7c..037d023 100644
--- a/examples/head.php
+++ b/examples/head.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/instagram_popular_media.php b/examples/instagram_popular_media.php
index ecbc4c2..bb61ae3 100644
--- a/examples/instagram_popular_media.php
+++ b/examples/instagram_popular_media.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/instagram_search_photos.php b/examples/instagram_search_photos.php
index f5bfcad..1b2a9af 100644
--- a/examples/instagram_search_photos.php
+++ b/examples/instagram_search_photos.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/mailchimp_subscribe_email_address.php b/examples/mailchimp_subscribe_email_address.php
index d92fa1d..6692972 100644
--- a/examples/mailchimp_subscribe_email_address.php
+++ b/examples/mailchimp_subscribe_email_address.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/memory_leak_test_curl.php b/examples/memory_leak_test_curl.php
index dc2055b..da3ca02 100644
--- a/examples/memory_leak_test_curl.php
+++ b/examples/memory_leak_test_curl.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/memory_leak_test_multi_curl.php b/examples/memory_leak_test_multi_curl.php
index d690168..978b04b 100644
--- a/examples/memory_leak_test_multi_curl.php
+++ b/examples/memory_leak_test_multi_curl.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_add_curl.php b/examples/multi_curl_add_curl.php
index 87e99a1..f932205 100644
--- a/examples/multi_curl_add_curl.php
+++ b/examples/multi_curl_add_curl.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/multi_curl_add_curl_from_url_list.php b/examples/multi_curl_add_curl_from_url_list.php
index 1ae433b..a148fe7 100644
--- a/examples/multi_curl_add_curl_from_url_list.php
+++ b/examples/multi_curl_add_curl_from_url_list.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_before_send.php b/examples/multi_curl_before_send.php
index dd03d61..f0a03be 100644
--- a/examples/multi_curl_before_send.php
+++ b/examples/multi_curl_before_send.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_before_send_retry.php b/examples/multi_curl_before_send_retry.php
index 4235a36..3f4587d 100644
--- a/examples/multi_curl_before_send_retry.php
+++ b/examples/multi_curl_before_send_retry.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_delete.php b/examples/multi_curl_delete.php
index 46d00a8..b9f8670 100644
--- a/examples/multi_curl_delete.php
+++ b/examples/multi_curl_delete.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_download_files.php b/examples/multi_curl_download_files.php
index 49ab147..615ae95 100644
--- a/examples/multi_curl_download_files.php
+++ b/examples/multi_curl_download_files.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_download_files_with_callback.php b/examples/multi_curl_download_files_with_callback.php
index eb03063..5b48302 100644
--- a/examples/multi_curl_download_files_with_callback.php
+++ b/examples/multi_curl_download_files_with_callback.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_download_files_with_callbacks.php b/examples/multi_curl_download_files_with_callbacks.php
index a3d8add..d56174f 100644
--- a/examples/multi_curl_download_files_with_callbacks.php
+++ b/examples/multi_curl_download_files_with_callbacks.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_get.php b/examples/multi_curl_get.php
index abd0a0d..8bd3aca 100644
--- a/examples/multi_curl_get.php
+++ b/examples/multi_curl_get.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_get_callbacks.php b/examples/multi_curl_get_callbacks.php
index 0f2065f..805c03e 100644
--- a/examples/multi_curl_get_callbacks.php
+++ b/examples/multi_curl_get_callbacks.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_get_load_test.php b/examples/multi_curl_get_load_test.php
index d124477..bf015dd 100644
--- a/examples/multi_curl_get_load_test.php
+++ b/examples/multi_curl_get_load_test.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_get_process_later.php b/examples/multi_curl_get_process_later.php
index 4ac6dfb..ea9debb 100644
--- a/examples/multi_curl_get_process_later.php
+++ b/examples/multi_curl_get_process_later.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_get_relative.php b/examples/multi_curl_get_relative.php
index bb9bcac..ee83d9e 100644
--- a/examples/multi_curl_get_relative.php
+++ b/examples/multi_curl_get_relative.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_get_with_callable_retry.php b/examples/multi_curl_get_with_callable_retry.php
index c72bade..fd76f69 100644
--- a/examples/multi_curl_get_with_callable_retry.php
+++ b/examples/multi_curl_get_with_callable_retry.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_get_with_new_random_proxy.php b/examples/multi_curl_get_with_new_random_proxy.php
index 1e02463..662dd34 100644
--- a/examples/multi_curl_get_with_new_random_proxy.php
+++ b/examples/multi_curl_get_with_new_random_proxy.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\ArrayUtil;
diff --git a/examples/multi_curl_get_with_new_random_unique_proxy.php b/examples/multi_curl_get_with_new_random_unique_proxy.php
index 9d30a54..05405ce 100644
--- a/examples/multi_curl_get_with_new_random_unique_proxy.php
+++ b/examples/multi_curl_get_with_new_random_unique_proxy.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\ArrayUtil;
diff --git a/examples/multi_curl_get_with_rate_limit.php b/examples/multi_curl_get_with_rate_limit.php
index 6c52ce5..612182b 100644
--- a/examples/multi_curl_get_with_rate_limit.php
+++ b/examples/multi_curl_get_with_rate_limit.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_get_with_retry.php b/examples/multi_curl_get_with_retry.php
index 1dfd6c0..11a246a 100644
--- a/examples/multi_curl_get_with_retry.php
+++ b/examples/multi_curl_get_with_retry.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_patch.php b/examples/multi_curl_patch.php
index c546472..4a7e244 100644
--- a/examples/multi_curl_patch.php
+++ b/examples/multi_curl_patch.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_post.php b/examples/multi_curl_post.php
index 997c24a..08ddf1e 100644
--- a/examples/multi_curl_post.php
+++ b/examples/multi_curl_post.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_proxies.php b/examples/multi_curl_proxies.php
index 3bb00eb..1474c92 100644
--- a/examples/multi_curl_proxies.php
+++ b/examples/multi_curl_proxies.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_proxy.php b/examples/multi_curl_proxy.php
index 25fcb63..867cf57 100644
--- a/examples/multi_curl_proxy.php
+++ b/examples/multi_curl_proxy.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_proxy_socks5.php b/examples/multi_curl_proxy_socks5.php
index 2592011..a97df34 100644
--- a/examples/multi_curl_proxy_socks5.php
+++ b/examples/multi_curl_proxy_socks5.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_put.php b/examples/multi_curl_put.php
index 4236aad..e3b99f5 100644
--- a/examples/multi_curl_put.php
+++ b/examples/multi_curl_put.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_set_custom_instance_tag.php b/examples/multi_curl_set_custom_instance_tag.php
index 1270a47..8fa0c89 100644
--- a/examples/multi_curl_set_custom_instance_tag.php
+++ b/examples/multi_curl_set_custom_instance_tag.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_stop.php b/examples/multi_curl_stop.php
index 86af6e9..ac6e4e5 100644
--- a/examples/multi_curl_stop.php
+++ b/examples/multi_curl_stop.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/multi_curl_upload_file.php b/examples/multi_curl_upload_file.php
index b4aa70d..568cdb0 100644
--- a/examples/multi_curl_upload_file.php
+++ b/examples/multi_curl_upload_file.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\MultiCurl;
diff --git a/examples/options.php b/examples/options.php
index f724c76..e2bb7a8 100644
--- a/examples/options.php
+++ b/examples/options.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/patch.php b/examples/patch.php
index f76a666..f4c86d1 100644
--- a/examples/patch.php
+++ b/examples/patch.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/post.php b/examples/post.php
index aa17d6e..5545b73 100644
--- a/examples/post.php
+++ b/examples/post.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/post_json.php b/examples/post_json.php
index 37bab8c..a0533c9 100644
--- a/examples/post_json.php
+++ b/examples/post_json.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/post_json_array_response.php b/examples/post_json_array_response.php
index ca8cd33..7dc1870 100644
--- a/examples/post_json_array_response.php
+++ b/examples/post_json_array_response.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/post_json_manual_encoding.php b/examples/post_json_manual_encoding.php
index ca5ab71..6dba394 100644
--- a/examples/post_json_manual_encoding.php
+++ b/examples/post_json_manual_encoding.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/post_multiple_values_same_key_with_indexes_explicit.php b/examples/post_multiple_values_same_key_with_indexes_explicit.php
index d82bf84..d92bd71 100644
--- a/examples/post_multiple_values_same_key_with_indexes_explicit.php
+++ b/examples/post_multiple_values_same_key_with_indexes_explicit.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/post_multiple_values_same_key_with_indexes_implicit.php b/examples/post_multiple_values_same_key_with_indexes_implicit.php
index 780bc79..6ccabb5 100644
--- a/examples/post_multiple_values_same_key_with_indexes_implicit.php
+++ b/examples/post_multiple_values_same_key_with_indexes_implicit.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/post_redirect_get.php b/examples/post_redirect_get.php
index 2c816f5..7100ded 100644
--- a/examples/post_redirect_get.php
+++ b/examples/post_redirect_get.php
@@ -1,4 +1,5 @@
 <?php
+
 // Perform a post-redirect-get request (POST data and follow 303 redirections
 // using GET requests).
 $curl = new Curl();
diff --git a/examples/post_xml.php b/examples/post_xml.php
index e14cbcd..a01129c 100644
--- a/examples/post_xml.php
+++ b/examples/post_xml.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/proxy.php b/examples/proxy.php
index 86c1325..84a890c 100644
--- a/examples/proxy.php
+++ b/examples/proxy.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/proxy_socks5.php b/examples/proxy_socks5.php
index 4fd4a61..e655fb5 100644
--- a/examples/proxy_socks5.php
+++ b/examples/proxy_socks5.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/put.php b/examples/put.php
index 76b212f..1e47b6d 100644
--- a/examples/put.php
+++ b/examples/put.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/reddit_top_pics.php b/examples/reddit_top_pics.php
index f79019c..96dde4f 100644
--- a/examples/reddit_top_pics.php
+++ b/examples/reddit_top_pics.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/search.php b/examples/search.php
index 7a942df..99a8259 100644
--- a/examples/search.php
+++ b/examples/search.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/set_cookie.php b/examples/set_cookie.php
index 1a54257..c3a09ef 100644
--- a/examples/set_cookie.php
+++ b/examples/set_cookie.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/set_url_1.php b/examples/set_url_1.php
index bbb2f2d..62bf745 100644
--- a/examples/set_url_1.php
+++ b/examples/set_url_1.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/set_url_2.php b/examples/set_url_2.php
index b296b1d..fc8b28d 100644
--- a/examples/set_url_2.php
+++ b/examples/set_url_2.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/twitter_post_tweet.php b/examples/twitter_post_tweet.php
index 830d00c..8e0057f 100644
--- a/examples/twitter_post_tweet.php
+++ b/examples/twitter_post_tweet.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/twitter_trending_topics.php b/examples/twitter_trending_topics.php
index 23926e5..2868b30 100644
--- a/examples/twitter_trending_topics.php
+++ b/examples/twitter_trending_topics.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/upload_file.php b/examples/upload_file.php
index ab993de..d09c46c 100644
--- a/examples/upload_file.php
+++ b/examples/upload_file.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/use_custom_xml_decoder.php b/examples/use_custom_xml_decoder.php
index f54cd4a..d388eb2 100644
--- a/examples/use_custom_xml_decoder.php
+++ b/examples/use_custom_xml_decoder.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/youtube_list_playlist_videos.php b/examples/youtube_list_playlist_videos.php
index bb5337f..a98320a 100644
--- a/examples/youtube_list_playlist_videos.php
+++ b/examples/youtube_list_playlist_videos.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/examples/youtube_video_count.php b/examples/youtube_video_count.php
index 4d76de8..484f886 100644
--- a/examples/youtube_video_count.php
+++ b/examples/youtube_video_count.php
@@ -1,4 +1,5 @@
 <?php
+
 require __DIR__ . '/../vendor/autoload.php';
 
 use Curl\Curl;
diff --git a/scripts/bump_major_version.php b/scripts/bump_major_version.php
index 4e40145..7ca2f6c 100755
--- a/scripts/bump_major_version.php
+++ b/scripts/bump_major_version.php
@@ -7,13 +7,15 @@ $current_version = Curl\Curl::VERSION;
 list($major, $_, $__) = explode('.', $current_version);
 $new_version = implode('.', [(string)((int)$major += 1), '0', '0']);
 
-foreach ([
+foreach (
+    [
         [
             __DIR__ . '/../src/Curl/Curl.php',
             '/const VERSION = \'(?:\d+.\d+.\d+)\';/',
             'const VERSION = \'' . $new_version . '\';',
         ],
-    ] as $info) {
+    ] as $info
+) {
     list($filepath, $find, $replace) = $info;
     $data = preg_replace($find, $replace, file_get_contents($filepath));
     file_put_contents($filepath, $data);
diff --git a/scripts/bump_minor_version.php b/scripts/bump_minor_version.php
index 4e93ff7..a960450 100755
--- a/scripts/bump_minor_version.php
+++ b/scripts/bump_minor_version.php
@@ -7,13 +7,15 @@ $current_version = Curl\Curl::VERSION;
 list($major, $minor, $_) = explode('.', $current_version);
 $new_version = implode('.', [$major, (string)((int)$minor += 1), '0']);
 
-foreach ([
+foreach (
+    [
         [
             __DIR__ . '/../src/Curl/Curl.php',
             '/const VERSION = \'(?:\d+.\d+.\d+)\';/',
             'const VERSION = \'' . $new_version . '\';',
         ],
-    ] as $info) {
+    ] as $info
+) {
     list($filepath, $find, $replace) = $info;
     $data = preg_replace($find, $replace, file_get_contents($filepath));
     file_put_contents($filepath, $data);
diff --git a/scripts/bump_patch_version.php b/scripts/bump_patch_version.php
index f2d3e87..df57314 100755
--- a/scripts/bump_patch_version.php
+++ b/scripts/bump_patch_version.php
@@ -7,13 +7,15 @@ $current_version = Curl\Curl::VERSION;
 list($major, $minor, $patch) = explode('.', $current_version);
 $new_version = implode('.', [$major, $minor, (string)((int)$patch += 1)]);
 
-foreach ([
+foreach (
+    [
         [
             __DIR__ . '/../src/Curl/Curl.php',
             '/const VERSION = \'(?:\d+.\d+.\d+)\';/',
             'const VERSION = \'' . $new_version . '\';',
         ],
-    ] as $info) {
+    ] as $info
+) {
     list($filepath, $find, $replace) = $info;
     $data = preg_replace($find, $replace, file_get_contents($filepath));
     file_put_contents($filepath, $data);
diff --git a/src/Curl/ArrayUtil.php b/src/Curl/ArrayUtil.php
index 4805837..20a83c8 100644
--- a/src/Curl/ArrayUtil.php
+++ b/src/Curl/ArrayUtil.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
diff --git a/src/Curl/BaseCurl.php b/src/Curl/BaseCurl.php
index 86edf11..6aaec58 100644
--- a/src/Curl/BaseCurl.php
+++ b/src/Curl/BaseCurl.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
diff --git a/src/Curl/CaseInsensitiveArray.php b/src/Curl/CaseInsensitiveArray.php
index ba4717e..32abd6c 100644
--- a/src/Curl/CaseInsensitiveArray.php
+++ b/src/Curl/CaseInsensitiveArray.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
@@ -7,7 +9,6 @@ namespace Curl;
  */
 class CaseInsensitiveArray implements \ArrayAccess, \Countable, \Iterator
 {
-
     /**
      * @var mixed[] Data storage with lowercase keys.
      *
diff --git a/src/Curl/Curl.php b/src/Curl/Curl.php
index b37ff56..b2cd095 100644
--- a/src/Curl/Curl.php
+++ b/src/Curl/Curl.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
@@ -142,7 +144,8 @@ class Curl extends BaseCurl
         $binary_data = false;
 
         // Return JSON-encoded string when the request's content-type is JSON and the data is serializable.
-        if (isset($this->headers['Content-Type']) &&
+        if (
+            isset($this->headers['Content-Type']) &&
             preg_match($this->jsonPattern, $this->headers['Content-Type']) &&
             (
                 is_array($data) ||
@@ -151,7 +154,8 @@ class Curl extends BaseCurl
                     interface_exists('JsonSerializable', false) &&
                     $data instanceof \JsonSerializable
                 )
-            )) {
+            )
+        ) {
             $data = \Curl\Encoder::encodeJson($data);
         } elseif (is_array($data)) {
             // Manually build a single-dimensional array from a multi-dimensional array as using curl_setopt($ch,
@@ -179,12 +183,14 @@ class Curl extends BaseCurl
             }
         }
 
-        if (!$binary_data &&
+        if (
+            !$binary_data &&
             (is_array($data) || is_object($data)) &&
             (
                 !isset($this->headers['Content-Type']) ||
                 !preg_match('/^multipart\/form-data/', $this->headers['Content-Type'])
-            )) {
+            )
+        ) {
             // Avoid using http_build_query() as keys with null values are
             // unexpectedly excluded from the resulting string.
             //
@@ -1310,10 +1316,12 @@ class Curl extends BaseCurl
 
             echo 'Request contained ' . ($request_body_empty ? 'no body' : 'a body') . '.' . "\n";
 
-            if ($request_headers_count === 0 && (
+            if (
+                $request_headers_count === 0 && (
                 $this->getOpt(CURLOPT_VERBOSE) ||
                 !$this->getOpt(CURLINFO_HEADER_OUT)
-            )) {
+                )
+            ) {
                 echo
                     'Warning: Request headers (Curl::requestHeaders) are expected to be empty ' .
                     '(CURLOPT_VERBOSE was enabled or CURLINFO_HEADER_OUT was disabled).' . "\n";
@@ -1378,8 +1386,10 @@ class Curl extends BaseCurl
                     echo 'Response content length (calculated): ' . $response_calculated_length . "\n";
                 }
 
-                if (isset($this->responseHeaders['Content-Type']) &&
-                    preg_match($this->jsonPattern, $this->responseHeaders['Content-Type'])) {
+                if (
+                    isset($this->responseHeaders['Content-Type']) &&
+                    preg_match($this->jsonPattern, $this->responseHeaders['Content-Type'])
+                ) {
                     $parsed_response = json_decode($this->rawResponse, true);
                     if ($parsed_response !== null) {
                         $messages = [];
@@ -1617,8 +1627,10 @@ class Curl extends BaseCurl
     public function __get($name)
     {
         $return = null;
-        if (in_array($name, self::$deferredProperties, true) &&
-            is_callable([$this, $getter = 'get' . ucfirst($name)])) {
+        if (
+            in_array($name, self::$deferredProperties, true) &&
+            is_callable([$this, $getter = 'get' . ucfirst($name)])
+        ) {
             $return = $this->$name = $this->$getter();
         }
         return $return;
@@ -1915,8 +1927,10 @@ class Curl extends BaseCurl
             }
         }
 
-        if (isset($response_headers['Content-Encoding']) && $response_headers['Content-Encoding'] === 'gzip' &&
-            is_string($response)) {
+        if (
+            isset($response_headers['Content-Encoding']) && $response_headers['Content-Encoding'] === 'gzip' &&
+            is_string($response)
+        ) {
             // Use @ to suppress message "Warning gzdecode(): data error".
             $decoded_response = @gzdecode($response);
             if ($decoded_response !== false) {
diff --git a/src/Curl/Decoder.php b/src/Curl/Decoder.php
index d52d44c..5f98219 100644
--- a/src/Curl/Decoder.php
+++ b/src/Curl/Decoder.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
diff --git a/src/Curl/Encoder.php b/src/Curl/Encoder.php
index 6d7359d..c946ede 100644
--- a/src/Curl/Encoder.php
+++ b/src/Curl/Encoder.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
diff --git a/src/Curl/MultiCurl.php b/src/Curl/MultiCurl.php
index 964259a..f9005d6 100755
--- a/src/Curl/MultiCurl.php
+++ b/src/Curl/MultiCurl.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
@@ -519,8 +521,10 @@ class MultiCurl extends BaseCurl
         // unexpectedly changing the request url after is has been specified.
         if ($option === CURLOPT_URL) {
             foreach ($this->queuedCurls as $curl_id => $curl) {
-                if (!isset($this->instanceSpecificOptions[$curl_id][$option]) ||
-                    $this->instanceSpecificOptions[$curl_id][$option] === null) {
+                if (
+                    !isset($this->instanceSpecificOptions[$curl_id][$option]) ||
+                    $this->instanceSpecificOptions[$curl_id][$option] === null
+                ) {
                     $this->instanceSpecificOptions[$curl_id][$option] = $value;
                 }
             }
@@ -644,7 +648,8 @@ class MultiCurl extends BaseCurl
         $this->currentRequestCount = 0;
 
         do {
-            while (count($this->queuedCurls) &&
+            while (
+                count($this->queuedCurls) &&
                 count($this->activeCurls) < $this->concurrency &&
                 (!$this->rateLimitEnabled || $this->hasRequestQuota())
             ) {
@@ -690,8 +695,10 @@ class MultiCurl extends BaseCurl
                 }
             }
 
-            while ((is_resource($this->multiCurl) || $this->multiCurl instanceof \CurlMultiHandle) &&
-                (($info_array = curl_multi_info_read($this->multiCurl)) !== false)) {
+            while (
+                (is_resource($this->multiCurl) || $this->multiCurl instanceof \CurlMultiHandle) &&
+                (($info_array = curl_multi_info_read($this->multiCurl)) !== false)
+            ) {
                 if ($info_array['msg'] === CURLMSG_DONE) {
                     foreach ($this->activeCurls as $key => $curl) {
                         if ($curl->curl === $info_array['handle']) {
diff --git a/src/Curl/StringUtil.php b/src/Curl/StringUtil.php
index a2cf6d8..cc7c68b 100644
--- a/src/Curl/StringUtil.php
+++ b/src/Curl/StringUtil.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
diff --git a/src/Curl/Url.php b/src/Curl/Url.php
index da03cb8..eaf79d6 100644
--- a/src/Curl/Url.php
+++ b/src/Curl/Url.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Curl;
 
@@ -13,7 +15,7 @@ class Url
         $this->relativeUrl = $relative_url;
     }
 
-    public function __toString() : string
+    public function __toString(): string
     {
         return $this->absolutizeUrl();
     }
diff --git a/tests/ContentRangeServer.php b/tests/ContentRangeServer.php
index c691d73..5be219a 100644
--- a/tests/ContentRangeServer.php
+++ b/tests/ContentRangeServer.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace ContentRangeServer;
 
diff --git a/tests/Helper.php b/tests/Helper.php
index dd73a71..50b6886 100644
--- a/tests/Helper.php
+++ b/tests/Helper.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Helper;
 
diff --git a/tests/PHPCurlClass/ArrayUtilTest.php b/tests/PHPCurlClass/ArrayUtilTest.php
index e891106..f69bbda 100644
--- a/tests/PHPCurlClass/ArrayUtilTest.php
+++ b/tests/PHPCurlClass/ArrayUtilTest.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace CurlTest;
 
diff --git a/tests/PHPCurlClass/PHPCurlClassTest.php b/tests/PHPCurlClass/PHPCurlClassTest.php
index c061845..24c7d01 100644
--- a/tests/PHPCurlClass/PHPCurlClassTest.php
+++ b/tests/PHPCurlClass/PHPCurlClassTest.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace CurlTest;
 
@@ -751,7 +753,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
 
         $filesize = filesize($filename);
 
-        foreach ([
+        foreach (
+            [
                 false,
                 0,
                 1,
@@ -782,7 +785,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
                 $filesize + 2,
                 $filesize + 3,
 
-            ] as $length) {
+            ] as $length
+        ) {
             $source = Test::TEST_URL;
             $destination = \Helper\get_tmp_file_path();
 
@@ -1111,7 +1115,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
 
     public function testResponseBody()
     {
-        foreach ([
+        foreach (
+            [
             'GET' => 'OK',
             'POST' => 'OK',
             'PUT' => 'OK',
@@ -1120,7 +1125,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
             'DELETE' => 'OK',
             'HEAD' => '',
             'OPTIONS' => 'OK',
-            ] as $request_method => $expected_response) {
+            ] as $request_method => $expected_response
+        ) {
             $curl = new Curl();
             $curl->setHeader('X-DEBUG-TEST', 'response_body');
             $this->assertEquals($expected_response, $curl->$request_method(Test::TEST_URL));
@@ -1489,7 +1495,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
 
     public function testJsonRequest()
     {
-        foreach ([
+        foreach (
+            [
                 [
                     [
                         'key' => 'value',
@@ -1507,24 +1514,29 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
                     ],
                     '{"key":"value","strings":["a","b","c"]}',
                 ],
-            ] as $test) {
+            ] as $test
+        ) {
             list($data, $expected_response) = $test;
 
             $test = new Test();
             $this->assertEquals($expected_response, $test->server('post_json', 'POST', json_encode($data)));
 
-            foreach ([
+            foreach (
+                [
                 'Content-Type',
                 'content-type',
-                'CONTENT-TYPE'] as $key) {
-                foreach ([
+                'CONTENT-TYPE'] as $key
+            ) {
+                foreach (
+                    [
                     'APPLICATION/JSON',
                     'APPLICATION/JSON; CHARSET=UTF-8',
                     'APPLICATION/JSON;CHARSET=UTF-8',
                     'application/json',
                     'application/json; charset=utf-8',
                     'application/json;charset=UTF-8',
-                    ] as $value) {
+                    ] as $value
+                ) {
                     $test = new Test();
                     $test->curl->setHeader($key, $value);
                     $this->assertEquals($expected_response, $test->server('post_json', 'POST', json_encode($data)));
@@ -1539,18 +1551,22 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
 
     public function testJsonResponse()
     {
-        foreach ([
+        foreach (
+            [
             'Content-Type',
             'content-type',
-            'CONTENT-TYPE'] as $key) {
-            foreach ([
+            'CONTENT-TYPE'] as $key
+        ) {
+            foreach (
+                [
                 'APPLICATION/JSON',
                 'APPLICATION/JSON; CHARSET=UTF-8',
                 'APPLICATION/JSON;CHARSET=UTF-8',
                 'application/json',
                 'application/json; charset=utf-8',
                 'application/json;charset=UTF-8',
-                ] as $value) {
+                ] as $value
+            ) {
                 $test = new Test();
                 $test->server('json_response', 'POST', [
                     'key' => $key,
@@ -2850,11 +2866,14 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
 
     public function testXmlResponse()
     {
-        foreach ([
+        foreach (
+            [
             'Content-Type',
             'content-type',
-            'CONTENT-TYPE'] as $key) {
-            foreach ([
+            'CONTENT-TYPE'] as $key
+        ) {
+            foreach (
+                [
                 'application/atom+xml; charset=UTF-8',
                 'application/atom+xml;charset=UTF-8',
                 'application/rss+xml',
@@ -2869,7 +2888,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
                 'text/xml',
                 'text/xml; charset=utf-8',
                 'text/xml;charset=utf-8',
-                ] as $value) {
+                ] as $value
+            ) {
                 $test = new Test();
                 $test->server('xml_response', 'POST', [
                     'key' => $key,
@@ -4225,7 +4245,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
         $test_3_output = ob_get_contents();
         ob_end_clean();
 
-        foreach ([
+        foreach (
+            [
             '--- Begin PHP Curl Class diagnostic output ---',
             'PHP Curl Class version: ' . Curl::VERSION,
             'PHP version: ' . PHP_VERSION,
@@ -4238,7 +4259,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
             'Received an HTTP 401 error response with message "HTTP/1.1 401 Unauthorized".',
             'Received an empty response body (response="").',
             '--- End PHP Curl Class diagnostic output ---',
-        ] as $expected_string) {
+            ] as $expected_string
+        ) {
             $this->assertStringContainsString($expected_string, $test_1_output);
             $this->assertStringContainsString($expected_string, $test_2_output);
             $this->assertStringContainsString($expected_string, $test_3_output);
@@ -4251,7 +4273,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
         $test->server('error_message', 'POST');
         $test_output = $test->curl->diagnose(true);
 
-        foreach ([
+        foreach (
+            [
             '--- Begin PHP Curl Class diagnostic output ---',
             'PHP Curl Class version: ' . Curl::VERSION,
             'PHP version: ' . PHP_VERSION,
@@ -4264,7 +4287,8 @@ class PHPCurlClassTest extends \PHPUnit\Framework\TestCase
             'Received an HTTP 401 error response with message "HTTP/1.1 401 Unauthorized".',
             'Received an empty response body (response="").',
             '--- End PHP Curl Class diagnostic output ---',
-        ] as $expected_string) {
+            ] as $expected_string
+        ) {
             $this->assertStringContainsString($expected_string, $test_output);
         }
     }
diff --git a/tests/PHPCurlClass/PHPMultiCurlClassTest.php b/tests/PHPCurlClass/PHPMultiCurlClassTest.php
index dfbf391..0ec41de 100644
--- a/tests/PHPCurlClass/PHPMultiCurlClassTest.php
+++ b/tests/PHPCurlClass/PHPMultiCurlClassTest.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace CurlTest;
 
@@ -2691,7 +2693,8 @@ class PHPMultiCurlClassTest extends \PHPUnit\Framework\TestCase
 
     public function testJsonRequest()
     {
-        foreach ([
+        foreach (
+            [
                 [
                     [
                         'key' => 'value',
@@ -2709,7 +2712,8 @@ class PHPMultiCurlClassTest extends \PHPUnit\Framework\TestCase
                     ],
                     '{"key":"value","strings":["a","b","c"]}',
                 ],
-            ] as $test) {
+            ] as $test
+        ) {
             list($data, $expected_response) = $test;
 
             $multi_curl = new MultiCurl();
@@ -2720,18 +2724,22 @@ class PHPMultiCurlClassTest extends \PHPUnit\Framework\TestCase
             $multi_curl->addPost(Test::TEST_URL, json_encode($data));
             $multi_curl->start();
 
-            foreach ([
+            foreach (
+                [
                 'Content-Type',
                 'content-type',
-                'CONTENT-TYPE'] as $key) {
-                foreach ([
+                'CONTENT-TYPE'] as $key
+            ) {
+                foreach (
+                    [
                     'APPLICATION/JSON',
                     'APPLICATION/JSON; CHARSET=UTF-8',
                     'APPLICATION/JSON;CHARSET=UTF-8',
                     'application/json',
                     'application/json; charset=utf-8',
                     'application/json;charset=UTF-8',
-                    ] as $value) {
+                    ] as $value
+                ) {
                     $multi_curl = new MultiCurl();
                     $multi_curl->setHeader('X-DEBUG-TEST', 'post_json');
                     $multi_curl->setHeader($key, $value);
@@ -3034,7 +3042,8 @@ class PHPMultiCurlClassTest extends \PHPUnit\Framework\TestCase
 
         $filesize = filesize($filename);
 
-        foreach ([
+        foreach (
+            [
                 false,
                 0,
                 1,
@@ -3065,7 +3074,8 @@ class PHPMultiCurlClassTest extends \PHPUnit\Framework\TestCase
                 $filesize + 2,
                 $filesize + 3,
 
-            ] as $length) {
+            ] as $length
+        ) {
             $source = Test::TEST_URL;
             $destination = \Helper\get_tmp_file_path();
 
@@ -3971,7 +3981,8 @@ class PHPMultiCurlClassTest extends \PHPUnit\Framework\TestCase
 
     public function testSetRateLimitUnits()
     {
-        foreach ([
+        foreach (
+            [
                 [
                     'rate_limit' => '1/s',
                     'expected' => [
@@ -4102,7 +4113,8 @@ class PHPMultiCurlClassTest extends \PHPUnit\Framework\TestCase
                         'interval_seconds' => '86400',
                     ],
                 ],
-            ] as $test) {
+            ] as $test
+        ) {
             $multi_curl = new MultiCurl();
             $multi_curl->setRateLimit($test['rate_limit']);
 
diff --git a/tests/PHPCurlClass/UrlTest.php b/tests/PHPCurlClass/UrlTest.php
index 154f065..1d445f7 100644
--- a/tests/PHPCurlClass/UrlTest.php
+++ b/tests/PHPCurlClass/UrlTest.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace CurlTest;
 
diff --git a/tests/RangeHeader.php b/tests/RangeHeader.php
index 31d153f..4676c9f 100644
--- a/tests/RangeHeader.php
+++ b/tests/RangeHeader.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace RangeHeader;
 
diff --git a/tests/User.php b/tests/User.php
index e079aab..3bb5660 100644
--- a/tests/User.php
+++ b/tests/User.php
@@ -1,4 +1,6 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
 
 namespace Helper;
 
diff --git a/tests/ruleset.xml b/tests/ruleset.xml
index c6961e5..bd9ac9a 100644
--- a/tests/ruleset.xml
+++ b/tests/ruleset.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<ruleset name="PSR2Modified">
+<ruleset name="PSR12Modified">
     <!-- Run against the PHPCompatibility ruleset. -->
     <rule ref="PHPCompatibility">
         <!-- TODO: Remove the following exclusion when this list() error is no longer incorrectly flagged. -->
@@ -7,12 +7,15 @@
     </rule>
     <config name="installed_paths" value="vendor/phpcompatibility/php-compatibility,vendor/phpcsstandards/phpcsutils/PHPCS23Utils" />
 
-    <!-- Run against the PSR2 ruleset with some exclusions. -->
-    <rule ref="PSR2">
+    <!-- Run against the PSR12 ruleset with some exclusions. -->
+    <rule ref="PSR12">
         <exclude name="Generic.Functions.FunctionCallArgumentSpacing.TooMuchSpaceAfterComma" />
 
         <!-- TODO: Remove the following exclusion when ArrayUtil functions not in camel caps format like ArrayUtil::is_array_assoc() are removed. -->
         <exclude name="PSR1.Methods.CamelCapsMethodName.NotCamelCaps" />
+
+        <!-- TODO: Remove the following exclusion when support for PHP 7.0 is dropped. As of PHP 7.1 visibility modifiers are allowed for class constants. -->
+        <exclude name="PSR12.Properties.ConstantVisibility.NotFound" />
     </rule>
 
     <!-- Disable "No PHP code was found in this file" for symlinks. -->
diff --git a/tests/server.php b/tests/server.php
index c42b868..49c7572 100644
--- a/tests/server.php
+++ b/tests/server.php
@@ -1,9 +1,14 @@
-<?php declare(strict_types=1);
+<?php
+
+declare(strict_types=1);
+
 $server_start = microtime(true);
 
 // Prevent direct access unless testing.
-if (getenv('PHP_CURL_CLASS_TEST_MODE_ENABLED') !== 'yes' &&
-    @$_SERVER['PHP_CURL_CLASS_TEST_MODE_ENABLED'] !== 'yes') {
+if (
+    getenv('PHP_CURL_CLASS_TEST_MODE_ENABLED') !== 'yes' &&
+    @$_SERVER['PHP_CURL_CLASS_TEST_MODE_ENABLED'] !== 'yes'
+) {
     exit;
 }
 
diff --git a/www/scripts/code.php b/www/scripts/code.php
index 1ab80da..c2f834d 100644
--- a/www/scripts/code.php
+++ b/www/scripts/code.php
@@ -1,4 +1,5 @@
 <?php
+
 $curl = new Curl();
 $curl->get('https://www.example.com/');