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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 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
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
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined offset: 2 in /in/7nMse on line 3 Notice: Undefined offset: 2 in /in/7nMse on line 3 Notice: Undefined offset: 2 in /in/7nMse on line 3 Notice: Undefined offset: 2 in /in/7nMse on line 3 Notice: Undefined offset: 2 in /in/7nMse on line 3 Notice: Undefined offset: 2 in /in/7nMse on line 3 Notice: Undefined offset: 2 in /in/7nMse on line 3 1111111 WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW
Output for 7.3.32 - 7.3.33, 7.4.26
1111111 WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/7nMse on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/7nMse on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/7nMse on line 3
Process exited with code 255.
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