Get remote URL content

request.php

<?php

function request($url, $cache = false) {

	$prefix = 'cache_response_';

		if($cache === true) {
			$folder = dirname(__FILE__ ) . DIRECTORY_SEPARATOR . 'cache';
			$folder = file_exists($folder) && is_writable($folder) ? $folder : '/tmp';
			$file = $folder . '/' . $prefix . md5($url);

			if(file_exists($file)) {
				$response = file_get_contents($file);

				return $response;
			}
		}

		$ch = curl_init();

		$agent= 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 1.1.4322)';

		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_HEADER, false);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
		curl_setopt($ch, CURLOPT_USERAGENT, $agent);
		curl_setopt($ch, CURLOPT_VERBOSE, true);
		curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
		curl_setopt($ch, CURLOPT_TIMEOUT, 10);
		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

		$response = curl_exec($ch);
		$error = curl_error($ch);
		$errno = curl_errno($ch);

		$info = curl_getinfo($ch);

		if($info['http_code'] == 504 || $errno == 28) {
			throw new Exception("Unable to open url: " . $url);
		}
		
		curl_close($ch);

		if($cache === true) {
			file_put_contents($file, $response);
		}

		return $response;
}
	
?>