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run code in 200+ php & hhvm versions
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<?php $strHaystack='test'; $strNeedle='t'; $numPos=strpos($strHaystack,$strNeedle); if((!$numPos) && ($numPos!=false)) print "Found '$strNeedle' at position: $numPos\r\n"; else print "Not Found!\r\n"; ?>
Output for 4.3.0 - 7.2.0
Not Found!