3v4l.org

run code in 300+ PHP versions simultaneously
<?php $xml = new SimpleXMLElement('<root><elem>Text</elem></root>'); var_dump($xml->elem2, isset($xml->elem2));
Output for 5.6.0 - 5.6.25, 7.0.0 - 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
object(SimpleXMLElement)#2 (0) { } bool(false)
preferences:
140.63 ms | 408 KiB | 5 Q