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run code in 150+ php & hhvm versions
Bugs & Features
<?php function array_group($array, $callable) { $result = array(); foreach ($array as $key => $value) { $key = $callable($key, $value); if (!isset($result[$key])) { $result[$key] = array(); } $result[$key][] = $value; } return $result; } $arr = range(1,10); var_dump(array_group($arr, function($key, $value) { return intval($value % 3); }));
Output for 5.3.0 - 7.1.0
array(3) { [1]=> array(4) { [0]=> int(1) [1]=> int(4) [2]=> int(7) [3]=> int(10) } [2]=> array(3) { [0]=> int(2) [1]=> int(5) [2]=> int(8) } [0]=> array(3) { [0]=> int(3) [1]=> int(6) [2]=> int(9) } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/ZY8GP on line 17
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/ZY8GP on line 17
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ZY8GP on line 17
Process exited with code 255.