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<?php $xml = new SimpleXMLElement('<root/>'); $xml->addChild('a', 1); $xml->addChild('a', 2); $xml->addChild('b', array('a','b')); print_r($xml);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: SimpleXMLElement::addChild(): Argument #2 ($value) must be of type ?string, array given in /in/u3fcu:6 Stack trace: #0 /in/u3fcu(6): SimpleXMLElement->addChild('b', Array) #1 {main} thrown in /in/u3fcu on line 6
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: SimpleXMLElement::addChild(): Argument #2 ($value) must be of type ?string, array given in /in/u3fcu:6 Stack trace: #0 /in/u3fcu(6): SimpleXMLElement->addChild('b', Array) #1 {main} thrown in /in/u3fcu on line 6
Process exited with code 255.
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: SimpleXMLElement::addChild() expects parameter 2 to be string, array given in /in/u3fcu on line 6 SimpleXMLElement Object ( [a] => Array ( [0] => 1 [1] => 2 ) )

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