3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "The quick brown fox jumps over the lazy dog"; $c = 0; for($i = 0; $i < 43; $i++) { if(in_array(substr($str,$i,1),array("a","e","i","o","u"))) $c++; } echo $c;

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39.24 ms | 402 KiB | 5 Q