3v4l.org

run code in 300+ PHP versions simultaneously
<?php $strHaystack='test'; $strNeedle='q'; $numPos=strpos($strHaystack,$strNeedle); print $numPos; print false; if($numPos!==false) print "Found '$strNeedle' at position: $numPos\r\n"; else print "Not Found!\r\n"; ?>

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39.18 ms | 402 KiB | 5 Q