3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php unserialize("a:2:{i:0;a:1:{s:7:"user_id";s:1:"8";}i:1;a:1:{s:7:"user_id";s:1:"8";}}")
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected 'user_id' (T_STRING) in /in/c3NY4 on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_STRING in /in/c3NY4 on line 3
Process exited with code 255.