3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function encode($str) { return preg_replace('/(.)\1*/', function($match) { return strlen($match[1]) . $match[2]; }, $str); } function decode($str) { return preg_replace('/(\d+)(\D)/', function($match) { return str_repeat($match[2], $match[1]); }, $str); } echo encode('WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW'), "\n"; echo decode('12W1B12W3B24W1B14W'), "\n";
Output for 7.1.0 - 7.3.0rc4
Recoverable fatal error: Object of class Closure could not be converted to string in /in/aV9eF on line 3
Process exited with code 255.
Output for 5.3.0 - 7.0.20
Catchable fatal error: Object of class Closure could not be converted to string in /in/aV9eF on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/aV9eF on line 3
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/aV9eF on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/aV9eF on line 3
Process exited with code 255.