3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $muLevelIds = [1,6,7,8,9]; $subjectLevelIds = [1,6,7,8]; $occLevelIds = []; var_dump(array_union($muLevelIds, $subjectLevelIds, $occLevelIds)); function array_union($muLevelIds, $subjectLevelIds, $occLevelIds) { $allLevelIds = [1,6,7,8,9]; $arrays = [$muLevelIds, $subjectLevelIds, $occLevelIds]; $comp = [$allLevelIds]; foreach ($arrays as $arr) { if (count($arr)) { $comp[] = $arr; } } $combined = call_user_func_array('array_intersect', $comp); return $combined; }
based on JrtDE
Output for 5.4.0 - 7.2.0
array(4) { [0]=> int(1) [1]=> int(6) [2]=> int(7) [3]=> int(8) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/LvV7H 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/LvV7H on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/LvV7H on line 5
Process exited with code 255.