3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Varien_Object { } class Level77 { function serialize(\Varien_Object $object) { } }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/CXaSi on line 9
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/CXaSi on line 9 Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/CXaSi on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/CXaSi on line 9 Parse error: parse error, unexpected T_STRING, expecting ')' in /in/CXaSi on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/CXaSi on line 9 Parse error: parse error, expecting `')'' in /in/CXaSi on line 9
Process exited with code 255.
preferences:
192.96 ms | 401 KiB | 316 Q