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<?php $strHaystack='test'; $strNeedle='t'; $numPos=strpos($strHaystack,$strNeedle); if(!$numPos) print "Found '$strNeedle' at position: $numPos\r\n"; else print "Not Found!\r\n"; ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Found 't' at position: 0