3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = 'moooozeee'; // The regex matches any character -> . in a capture group () // plus as much identical characters as possible following it -> \1+ $pattern = '/(.)\1+/'; preg_match_all($pattern, $string, $m); // sort by their length usort($m[0], function($a, $b) { return (strlen($a) < strlen($b)) ? 1 : -1; }); echo "Longest sequence: " . $m[0][0] . PHP_EOL;
based on ntYWY
Output for 5.3.0 - 7.2.0
Longest sequence: oooo
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/DPV15 on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/DPV15 on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/DPV15 on line 9
Process exited with code 255.