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run code in 150+ php & hhvm versions
Bugs & Features
<?php class MyClass { public $prop; } $foo = new MyClass(); $foo->prop = 'test1'; $bar = $foo; $test = array($foo, $bar); var_dump(array_unique($test, SORT_REGULAR));
Output for 5.2.9 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(1) { [0]=> object(MyClass)#1 (1) { ["prop"]=> string(5) "test1" } }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.2.8
Warning: Wrong parameter count for array_unique() in /in/EtafQ on line 14 NULL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/EtafQ on line 4
Process exited with code 255.
Output for 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/EtafQ on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/EtafQ on line 4
Process exited with code 255.
Output for 4.3.0
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/PVhX7 on line 4
Process exited with code 255.