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Support UTF-8 characters by adding an XML opening tag containing the encoding. Got the idea from: http://php.net/manual/en/domdocument.loadhtml.php#95251
By encoding it to UTF-8 after html is loaded, the encoding is preserved. Because the encoding is preserved, the UTF-8 characters are not escaped to htmlentities. So
€
stays€
.I prefer this, because I think it's not the responsibility of this class to alter the inner content of html nodes.