[DomCrawler] Fixed the Crawler::html() method for early PHP versions #8013
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Node argument was added to the
DOMDocument::saveHTML()
in PHP 5.3.6. See http://php.net/manual/en/domdocument.savehtml.php.It's not a nice looking solution, but seems to be the only option. Condition should be removed once PHP dependency goes over 5.3.6.