$re = '/^{@(?:[^|]*\|){6}([^|]+)/m';
$str = '{@BATCH|ABCDEF|01|12|1||XYZGM|210401113439|online|ATGHDGV03|QGH83826|RevA|||';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php