Online PHP editor | output for gAWdv

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: DOMDocument::registerNodeClass(): Argument #2 ($extendedClass) must be a valid class name or null, MyElement given in /in/gAWdv:4 Stack trace: #0 /in/gAWdv(4): DOMDocument->registerNodeClass('DOMElement', 'MyElement') #1 {main} thrown in /in/gAWdv on line 4
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: DOMDocument::registerNodeClass(): Argument #2 ($extendedClass) must be a valid class name or null, MyElement given in /in/gAWdv:4 Stack trace: #0 /in/gAWdv(4): DOMDocument->registerNodeClass('DOMElement', 'MyElement') #1 {main} thrown in /in/gAWdv on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Warning: DOMDocument::registerNodeClass() expects parameter 2 to be a valid class name, 'MyElement' given in /in/gAWdv on line 4 :-)
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30: Fatal error: DOMDocument::registerNodeClass(): Class MyElement does not exist in /in/gAWdv on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6: Fatal error: Call to undefined method DOMDocument::registerNodeClass() in /in/gAWdv on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9: Fatal error: Cannot instantiate non-existent class: domdocument in /in/gAWdv on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Cannot instantiate non-existent class: domdocument in /in/gAWdv on line 3