/**
     * Check syntax and other validity aspects of PHP source code.
     *
     * @param string $string A string of PHP source code without an open tag
     * @return boolean TRUE if code appears valid, FALSE otherwise
     */
    function ___check($string)
    {

        $source      = '<?php ' . $string;

        $syntax_check = shell_exec(sprintf(
            'echo %s | php -l',
            escapeshellarg($source)
        ));

        if (stripos($syntax_check, 'No syntax errors') === FALSE) {
            return FALSE;
        }


        foreach (($tokens = token_get_all($source)) as $i => $token) {

            if (is_array($token)) {

                if ($token[0] == T_STRING && $tokens[$i + 1] == '(') {

                    $t = $token[1];

                    $previous_token = is_array($tokens[$i - 1])
                        ? $tokens[$i - 1][0]
                        : $tokens[$i - 1];

                    switch ($previous_token) {

                        // Safe Cases

                        case T_FUNCTION:
                        case T_OBJECT_OPERATOR:
                            break;

                        case T_PAAMAYIM_NEKUDOTAYIM:

                            $t      = $tokens[$i - 2][1];
                            $method = $token[1];

                        case T_NEW:

                            if (!class_exists($t)) {
                                echo sprintf(
                                    'Error:  Class %s does not exist.%s',
                                    $t
                                ) . PHP_EOL;
                                return FALSE;
                            }

                            // Handle method_exists check for static methods

                            if (isset($method) && !method_exists($t, $method)) {
                                echo sprintf(
                                    'Error:  Method %s() does not exist on %s.',
                                    $method,
                                    $t
                                ) . PHP_EOL;
                                return FALSE;
                            }

                            break;

                        default:
                            if (!function_exists($t)) {
                                echo sprintf(
                                    'Error:  Function %s() does not exist.',
                                    $t
                                ) . PHP_EOL;
                                return FALSE;
                            }
                            break;
                    }
                }
            }
        }

        return TRUE;
    }