* 'curl_version' => 'php5-curl' * * means that this program requires curl_version() function to work properly and that it corresponds to php5-curl * package. */ public static $REQUIRED_FUNCTIONS = array( 'json_decode' => 'php5-json', 'json_encode' => 'php5-json', 'curl_version' => 'php5-curl' ); } // Check PHP version if (version_compare(phpversion(), Config::PHP_MIN_VERSION, "<")) { throw new \RuntimeException('This library requires PHP ' . Config::PHP_MIN_VERSION . ' or newer.'); } // Check PHP configuration foreach(Config::$REQUIRED_FUNCTIONS as $key => $value) { if (!function_exists($key)) { throw new Exception\DependencyException('This library requires ' . $value . '.'); } } // Prior to PHP 5.5, CURL_SSLVERSION_TLSv1 and CURL_SSLVERSION_DEFAULT didn't exist. Hence, we have to use a numeric value. if (!defined('CURL_SSLVERSION_DEFAULT')) { define('CURL_SSLVERSION_DEFAULT', 0); } if (!defined('CURL_SSLVERSION_TLSv1')) { define('CURL_SSLVERSION_TLSv1', 1); }