alexia\mar\tests::checkSyntax PHP Method

    public function checkSyntax($filePath)
    {
        $binary = $this->getPHPBinaryPath();
        exec($binary . ' -l ' . escapeshellarg($filePath) . ' 2>&1', $output);
        $syntax = [];
        $errorMsgLine = ' in ' . $filePath;
        if (count($output)) {
            foreach ($output as $string) {
                if (empty($string)) {
                    continue;
                }
                if (strpos($string, 'error') !== false) {
                    $syntax['error'] = str_replace($errorMsgLine, '', $string);
                    if (preg_match('#line (?P<line>\\d*)#is', $syntax['error'], $matches)) {
                        $syntax['line'] = intval($matches['line']);
                    }
                }
                if (strpos($string, 'No syntax errors detected') !== false) {
                    $syntax['is_valid'] = true;
                    break;
                }
            }
        }
        return $syntax;
    }