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<?php $s2 = '<?xml version="1.0"?><!DOCTYPE kaboom [ <!ENTITY a "'.str_repeat('a', 1000).'"> ]> <kaboom>'.str_repeat('&a;', 1000).'</kaboom>'; $doc = new DOMDocument(); $doc->loadXML($s2); echo strlen($doc->lastChild->nodeValue);

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34.13 ms | 402 KiB | 5 Q