3v4l.org

run code in 300+ PHP versions simultaneously
<?php $info = array("10" => 'apple',"8" => 'orange',"2" => 'banana',"23" => 'peach'); array_walk($info,function($v,$k)use(&$n){$n[]=[$k=>$v];}); print_r($n);

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27.92 ms | 402 KiB | 5 Q