/**
* This is the constractor function. It checks the all the requirements
* before creating the object, including php version checking.
*
* ### Warning
*
* @param int $timeOut provide the timeout in seconds.
* (Leave it or set it to null if you do not know what you are doing, risky.)
* @param string $userAgent provide a valid user agent.
* (Same here, leave it or set it to null if you do not know what you are doing, risky.)
*/
public function __construct($timeOut = null, $userAgent = null)
{
if ($timeOut >= 0) {
self::$timeout = $timeOut;
}
if (is_string($userAgent)) {
self::$userAgent = $userAgent;
}
//now check the php version.
if (version_compare(PHP_VERSION, '5.3', '<')) {
trigger_error("PHP version 5.3+ require.");
}
if (!function_exists('curl_init')) {
trigger_error("curl extention require to run.");
}
}
