3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = str_repeat("alkfjsdflajksdfklasjdfka",1); $b=str_repeat("fjkasdfjaksfjak;sfjdkajfskfajskdfajs",1); echo $a,"\n",$b,"\n"; list($a,$b) = array($b,$a); echo $a,"\n",$b;

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37.6 ms | 402 KiB | 5 Q