Fix php-curl-class#626: Add MultiCurl example for retrying with a new proxy

Author: zachborboa

examples/multi_curl_get_with_new_random_proxy.php

@@ -0,0 +1,41 @@
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+
+use Curl\ArrayUtil;
+use Curl\MultiCurl;
+
+$proxies = array(
+    'someproxy.com:9999',
+    'someproxy.com:80',
+    'someproxy.com:443',
+);
+$max_retries = 3;
+
+$multi_curl = new MultiCurl();
+$multi_curl->setProxyType(CURLPROXY_SOCKS5);
+$multi_curl->setProxies($proxies);
+
+$multi_curl->setRetry(function ($instance) use ($proxies, $max_retries) {
+    if ($instance->retries < $max_retries) {
+        $new_random_proxy = ArrayUtil::arrayRandom($proxies);
+        $instance->setProxy($new_random_proxy);
+        return true;
+    } else {
+        return false;
+    }
+});
+
+$multi_curl->addGet('https://httpbin.org/ip');
+$multi_curl->addGet('https://httpbin.org/ip');
+$multi_curl->addGet('https://httpbin.org/ip');
+
+$multi_curl->complete(function ($instance) {
+    echo
+        'curl id ' . $instance->id . ':' . "\n" .
+        '- ip: ' . $instance->response->origin . "\n" .
+        '- proxy: ' . $instance->getOpt(CURLOPT_PROXY) . "\n" .
+        '- url: ' . $instance->effectiveUrl . '' . "\n" .
+        '';
+});
+
+$multi_curl->start();