Simple realization of "reconnect" for php-cURL

README.md

PHP cURL reconnect

Simple implementations (2 variants) of the reconnection mechanism for CURL in PHP.

tihoho, 07.2019
Telegram: https://t.me/tihoho
PayPal for beer: tihoho@yandex.ru

curl-reconnect.php

<?php

/**
 * Curl Reconnect (Variant#1: Stop by non-empty content)
 * @param curlHandler $ch
 * @param int $tries
 * @return string
 */
function curlReconnect(&$ch, $tries = 3) {
	try 
	{
		foreach(range(0, $tries) as $try) {
			$response = curl_exec($ch);
			if(strlen($response)) {
				return $response;
			}
		}

		return '';

	} catch (\Throwable $e) {
		return '';
	}
}

/**
 * How to use Variant#1
 */
$ch = curl_init('https://example.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
// more setopts...
$response = curlReconnect($ch, 5);
curl_close($ch);

// -----------------------------------------------------------------------------------------------

/**
 * Curl Reconnect (Variant#2: Stop by status code)
 *
 * @param curlHandler $ch
 * @param integer $tries
 * @param integer $statusCode
 * @return string
 */
function curlReconnect(&$ch, $tries = 3, $statusCode = 200) {
	try 
	{
		foreach(range(0, $tries) as $try) {
			$response = curl_exec($ch);
			if($statusCode == (int) curl_getinfo($ch, CURLINFO_RESPONSE_CODE)) {
				return $response;
			}
		}

		return '';

	} catch (\Throwable $e) {
		return '';
	}
}

/**
 * How to use Variant#2 (same as Variant#1 :)
 */
$ch = curl_init('https://example.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
// more setopts...
$response = curlReconnect($ch, 5, 200);
curl_close($ch);