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run code in 300+ PHP versions simultaneously
<?php $QUERYSTRING = "test.eps.eps.php"; $changes = -1; do {$changes++; $a = $QUERYSTRING; $QUERYSTRING = str_replace(array('..', '~', chr(0), ':', '?'), '', $QUERYSTRING); } while ($a != $QUERYSTRING); echo $QUERYSTRING . "\n"; echo $changes . "\n"; if( ($changes > 0) || (substr(strtolower($QUERYSTRING), -3) != ".ai") && (substr(strtolower($QUERYSTRING), -4) != ".eps")) { echo "not allowed"; } else { echo "allowed"; }

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36.84 ms | 402 KiB | 5 Q