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run code in 150+ php & hhvm versions
Bugs & Features
<?php $abbreviations = array("AL","AK","AZ","AR"); $states = array("Alabama","Alaska","Arizona","Arkansas"); $stateMap = array_combine($abbreviations,$states); print_r($stateMap); $arr =[1,3,5,7,3,5,7]; foreach($arr as $v ){ if(!in_array($v,$tmp)){ $tmp[]=$v; } }print_r($tmp);
Output for 5.4.0 - 5.6.21, 7.0.0 - 7.1.0
Array ( [AL] => Alabama [AK] => Alaska [AZ] => Arizona [AR] => Arkansas ) Notice: Undefined variable: tmp in /in/Lnm9m on line 11 Warning: in_array() expects parameter 2 to be array, null given in /in/Lnm9m on line 11 Array ( [0] => 1 [1] => 3 [2] => 5 [3] => 7 )
Output for hhvm-3.12.0
Array ( [AL] => Alabama [AK] => Alaska [AZ] => Arizona [AR] => Arkansas ) Notice: Undefined variable: tmp in /in/Lnm9m on line 11 Warning: in_array() expects parameter 2 to be an array or collection in /in/Lnm9m on line 11 Array ( [0] => 1 [1] => 3 [2] => 5 [3] => 7 )
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/Lnm9m on line 8
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/Lnm9m on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Lnm9m on line 8
Process exited with code 255.