$re = '/^\[(.+)\] (\S+) > (.+)$/m';
$str = '[Player] Player1 > Hello
[Admin] Alex > Hi
[Player] Player2 > Help me, im stuck
[Mod] Jim > On my way
';
preg_match_all($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