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run code in 300+ PHP versions simultaneously
<?php $foo1 = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><root />'); $foo1->addChild("x", htmlspecialchars("<test />")); $foo2 = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><root><x /></root>'); $foo2->x = htmlspecialchars("<test />"); var_dump($foo1->x); var_dump($foo2->x); var_dump($foo1->asXML() === $foo2->asXML());

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