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<?php $xml = new \SimpleXMLElement(' <blog-post> <dc:tag xmlns:dc="http://purl.org/dc/elements/1.1/"/> </blog-post>' ); var_dump(isset($xml->tag));
Output for 7.0.11 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
bool(false)
Output for 5.6.0 - 5.6.27, 7.0.0 - 7.0.10
bool(true)
preferences:
130.16 ms | 407 KiB | 5 Q