3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=array("a"=>1,"b"=>1,"c"=>1,"e"=>1); $b=array("a"=>5,"b"=>6,"c"=>7,"e"=>8); print_r(array_pad(array(), 0, "")); //print_r(array_combine(array_keys($a),array_values($b)));

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39.22 ms | 402 KiB | 5 Q