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<?php function encode($str) { return preg_replace_callback('/(.)\1*/', function($match) { return strlen($match[1]) . $match[2]; }, $str); } function decode($str) { return preg_replace_callback('/(\d+)(\D)/', function($match) { return str_repeat($match[2], $match[1]); }, $str); } echo encode('WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW'), "\n"; echo decode('12W1B12W3B24W1B14W'), "\n";
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key 2 in /in/7nMse on line 3 Warning: Undefined array key 2 in /in/7nMse on line 3 Warning: Undefined array key 2 in /in/7nMse on line 3 Warning: Undefined array key 2 in /in/7nMse on line 3 Warning: Undefined array key 2 in /in/7nMse on line 3 Warning: Undefined array key 2 in /in/7nMse on line 3 Warning: Undefined array key 2 in /in/7nMse on line 3 1111111 WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW

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