From aebaef528b39f1a8b647c0ea0aebf4cf22b4d8f3 Mon Sep 17 00:00:00 2001
From: Zach Borboa <zachborboa@gmail.com>
Date: Fri, 23 Sep 2022 07:06:39 -0700
Subject: [PATCH] Add example for queuing requests dynamically

---
 .../multi_curl_add_curl_from_url_list.php     | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 examples/multi_curl_add_curl_from_url_list.php

diff --git a/examples/multi_curl_add_curl_from_url_list.php b/examples/multi_curl_add_curl_from_url_list.php
new file mode 100644
index 0000000..24eebfc
--- /dev/null
+++ b/examples/multi_curl_add_curl_from_url_list.php
@@ -0,0 +1,41 @@
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+
+use Curl\Curl;
+use Curl\MultiCurl;
+
+$urls = [
+    'https://www.example.com/?' . md5(mt_rand()),
+    'https://www.example.com/?' . md5(mt_rand()),
+    'https://www.example.com/?' . md5(mt_rand()),
+    'https://www.example.com/?' . md5(mt_rand()),
+    'https://www.example.com/?' . md5(mt_rand()),
+    // etc.
+];
+
+$multi_curl = new MultiCurl();
+$multi_curl->complete(function ($instance) use (&$multi_curl, &$urls) {
+    echo 'complete:' . $instance->url . "\n";
+
+    // Queue another request each time a request completes. Fetch the oldest url
+    // next using array_shift($urls) or use the most recently added url using
+    // array_pop($urls).
+    //   $next_url = array_shift($urls);
+    //   $next_url = array_pop($urls);
+    $next_url = array_shift($urls);
+
+    if ($next_url !== null) {
+        $multi_curl->addGet($next_url);
+    }
+});
+
+// Queue a few requests.
+$concurrency = 3;
+for ($i = 0; $i < $concurrency; $i++) {
+    $next_url = array_shift($urls);
+    if ($next_url !== null) {
+        $multi_curl->addGet($next_url);
+    }
+}
+
+$multi_curl->start();