diff --git a/examples/post_multiple_values_same_key_without_indexes.php b/examples/post_multiple_values_same_key_without_indexes.php
index 6341407..ac7b5c4 100644
--- a/examples/post_multiple_values_same_key_without_indexes.php
+++ b/examples/post_multiple_values_same_key_without_indexes.php
@@ -33,3 +33,5 @@ $curl->post('https://httpbin.org/post', http_build_query_without_indexes(array(
         'baz',
     ),
 )));
+
+// @codingStandardsIgnoreFile
diff --git a/examples/put_large_file_chunked.php b/examples/put_large_file_chunked.php
index bd8fbea..983038b 100644
--- a/examples/put_large_file_chunked.php
+++ b/examples/put_large_file_chunked.php
@@ -29,3 +29,5 @@ if ($curl->error) {
 } else {
     echo 'Success' . "\n";
 }
+
+// @codingStandardsIgnoreFile
diff --git a/examples/receive_large_file_chunked.php b/examples/receive_large_file_chunked.php
index 6cbcf88..d2bc687 100644
--- a/examples/receive_large_file_chunked.php
+++ b/examples/receive_large_file_chunked.php
@@ -18,3 +18,5 @@ $file = fopen($tmpnam, 'wb+');
 file_get_contents_chunked('php://input', 4096, function ($chunk) use (&$file) {
     fwrite($file, $chunk);
 });
+
+// @codingStandardsIgnoreFile
diff --git a/src/Curl/Decoder.php b/src/Curl/Decoder.php
index 60925be..f12fcce 100644
--- a/src/Curl/Decoder.php
+++ b/src/Curl/Decoder.php
@@ -13,7 +13,8 @@ class Decoder
      * @param  $depth
      * @param  $options
      */
-    public static function decodeJson() {
+    public static function decodeJson()
+    {
         $args = func_get_args();
 
         // Call json_decode() without the $options parameter in PHP
@@ -36,7 +37,8 @@ class Decoder
      * @access public
      * @param  $response
      */
-    public static function decodeXml($response) {
+    public static function decodeXml($response)
+    {
         $xml_obj = @simplexml_load_string($response);
         if (!($xml_obj === false)) {
             $response = $xml_obj;
diff --git a/tests/PHPCurlClass/PHPCurlClassTest.php b/tests/PHPCurlClass/PHPCurlClassTest.php
index f4f4c4a..a8c4587 100644
--- a/tests/PHPCurlClass/PHPCurlClassTest.php
+++ b/tests/PHPCurlClass/PHPCurlClassTest.php
@@ -1286,8 +1286,7 @@ class CurlTest extends \PHPUnit\Framework\TestCase
 
     public function testJsonRequest()
     {
-        foreach (
-            array(
+        foreach (array(
                 array(
                     array(
                         'key' => 'value',
diff --git a/tests/check_syntax.sh b/tests/check_syntax.sh
index dff7863..87073bc 100755
--- a/tests/check_syntax.sh
+++ b/tests/check_syntax.sh
@@ -1,3 +1,6 @@
+DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+cd "${DIR}"
 phpcs \
     --extensions="php" \
     --ignore="*/vendor/*" \
diff --git a/tests/ruleset.xml b/tests/ruleset.xml
index 11c4eba..885b183 100644
--- a/tests/ruleset.xml
+++ b/tests/ruleset.xml
@@ -2,8 +2,6 @@
 <ruleset name="PSR2Modified">
     <rule ref="PSR2">
         <exclude name="PSR1.Methods.CamelCapsMethodName.NotCamelCaps" />
-        <exclude name="PSR2.ControlStructures.ControlStructureSpacing.SpacingAfterOpenBrace" />
-        <exclude name="Squiz.ControlStructures.ForEachLoopDeclaration.SpaceAfterOpen" />
         <exclude name="Squiz.Functions.MultiLineFunctionDeclaration.BraceOnSameLine" />
         <exclude name="Squiz.Functions.MultiLineFunctionDeclaration.UseOneParamPerLine" />
     </rule>
diff --git a/tests/script.sh b/tests/script.sh
index d7c4eba..c943ad1 100755
--- a/tests/script.sh
+++ b/tests/script.sh
@@ -8,7 +8,7 @@ fi
 
 # Run tests.
 phpunit --version
-phpunit --configuration tests/phpunit.xml
+phpunit --configuration "tests/phpunit.xml"
 if [[ "${?}" -ne 0 ]]; then
     ((errors++))
 fi
@@ -112,4 +112,20 @@ if [[ ! -z "${elses}" ]]; then
     ((errors++))
 fi
 
+# Add composer bin directory to the path environment variable.
+export PATH="$PWD/vendor/bin:$PATH"
+
+# Detect coding standard violations.
+phpcs --version
+phpcs \
+    --extensions="php" \
+    --ignore="*/vendor/*" \
+    --standard="tests/ruleset.xml" \
+    -p \
+    -s \
+    .
+if [[ "${?}" -ne 0 ]]; then
+    ((errors++))
+fi
+
 exit "${errors}"