3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function array_group($cond, $arr) { if (empty($arr)) return []; $e = array_shift($arr); $g = [$e]; while($cond($e, reset($arr))) { $g[] = array_shift($arr); } return array_merge([$g], array_group($cond, $arr)); } function it($m,$p){echo ($p?'OK':'NO')." It $m\n";} function eq($a,$b) {return $a==$b;} echo it ('groups', array_group('eq', [1,5,5,6,6,6,7,9]) == [[1],[5,5],[6,6,6],[7],[9]]); echo it ('groups by comparing with first item of each group', array_group(function ($a, $b) { return ($a == ($b-1)) || ($a==$b); }, [1,1,2,3,1]) == [[1,1,2],[3],[1]]); echo it ('groups by comparing with first item of each group', array_group(function ($a, $b) { return ($a == ($b-1)) || ($a==$b); }, [1,1,2,1,3,1]) == [[1,1,2,1],[3],[1]]);
based on X2FC4
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
OK It groups OK It groups by comparing with first item of each group OK It groups by comparing with first item of each group
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/o5QUq on line 5
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 '[' in /in/o5QUq on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/o5QUq on line 5
Process exited with code 255.