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<?php $xml = new SimpleXMLElement('<p:father/>'); $xml->addChild('child'); echo $xml->asXML();
Output for 5.6.38, 7.0.33, 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Warning: SimpleXMLElement::__construct(): namespace error : Namespace prefix p on father is not defined in /in/lpt4g on line 3 Warning: SimpleXMLElement::__construct(): <p:father/> in /in/lpt4g on line 3 Warning: SimpleXMLElement::__construct(): ^ in /in/lpt4g on line 3 <?xml version="1.0"?> <p:father><child/></p:father>

preferences:
102.03 ms | 1440 KiB | 4 Q