$re = '/^[a-z0-9#!$%&\'*+-/=?^_`{}|~]+[\.a-z0-9!#$%&\'*+/=?^_`{|}~-]*[^.]@[a-z0-9]+[a-z0-9\.]*\.[a-z]{2,24}$/i';
$str = 'abcd@exam.fff.ffff.fff.fff.ff.ffple.com';
preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0);
// Print the entire match result
var_dump($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