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run code in 150+ php & hhvm versions
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<?php function myfunction($v) { return($v*$v); } $a=array(1,2,3,4,5); print_r(array_map("myfunction",$a)); ?>
Output for 4.3.0 - 7.1.0
Array ( [0] => 1 [1] => 4 [2] => 9 [3] => 16 [4] => 25 )