Online PHP editor | output for ZkKkD

Output for 5.3.3 - 5.3.29, 5.4.0 - 5.4.39, 5.4.42 - 5.4.45, 5.5.0 - 5.5.23, 5.5.26 - 5.5.36, 5.6.0 - 5.6.7, 5.6.10 - 5.6.28, 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 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.20, 8.4.1 - 8.4.6: <!DOCTYPE html> <html><head><meta charset="UTF-8"></head><body>U+0000 <span></span></body></html>
Output for 5.4.40 - 5.4.41, 5.5.24 - 5.5.25, 5.6.8 - 5.6.9: Warning: DOMDocument::loadHTML() expects parameter 1 to be a valid path, string given in /in/ZkKkD on line 6
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.2: <!DOCTYPE html> <html> <head><meta charset="UTF-8"></head> <body>U+0000 <span></span> </body> </html>
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9: Fatal error: Cannot instantiate non-existent class: domdocument in /in/ZkKkD on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Cannot instantiate non-existent class: domdocument in /in/ZkKkD on line 4