Fix php-curl-class#559: Add example that sets custom request instance tags.

Author: zachborboa

examples/multi_curl_set_custom_instance_tag.php

@@ -0,0 +1,29 @@
+<?php
+require __DIR__ . '/../vendor/autoload.php';
+
+use \Curl\MultiCurl;
+
+$urls = array(
+    'tag3' => 'https://httpbin.org/post',
+    'tag4' => 'https://httpbin.org/get',
+    'tag5' => 'https://httpbin.org/html',
+);
+
+$multi_curl = new MultiCurl();
+
+$multi_curl->success(function ($instance) {
+    echo 'call to ' . $instance->id . ' with "' . $instance->myTag . '" was successful.' . "\n";
+});
+$multi_curl->error(function ($instance) {
+    echo 'call to ' . $instance->id . ' with "' . $instance->myTag . '" was unsuccessful.' . "\n";
+});
+$multi_curl->complete(function ($instance) {
+    echo 'call to ' . $instance->id . ' with "' . $instance->myTag . '" completed.' . "\n";
+});
+
+foreach ($urls as $tag => $url) {
+    $instance = $multi_curl->addGet($url);
+    $instance->myTag = $tag;
+}
+
+$multi_curl->start();