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run code in 150+ php & hhvm versions
Bugs & Features
<?php class Derp { public function __toString() { return 1; } } $d = array(new Derp, new Derp, new Derp); var_dump(array_unique($d));
Output for 7.1.0
Recoverable fatal error: Method Derp::__toString() must return a string value in /in/mtWhD on line 11
Process exited with code 255.
Output for 5.2.0 - 5.2.8, 5.2.10 - 5.6.28, hhvm-3.10.0, 7.0.0 - 7.0.14
Catchable fatal error: Method Derp::__toString() must return a string value in /in/mtWhD on line 11
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Uncaught Error: Method Derp::__toString() must return a string value in /in/mtWhD:11 Stack trace: #0 {main}
Process exited with code 255.
Output for 5.2.9
array(1) { [0]=> object(Derp)#1 (0) { } }
Output for 5.0.0 - 5.1.6
array(3) { [0]=> object(Derp)#1 (0) { } [1]=> object(Derp)#2 (0) { } [2]=> object(Derp)#3 (0) { } }
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/mtWhD on line 5
Process exited with code 255.
Output for 4.3.0 - 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/mtWhD on line 5
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/mtWhD on line 5
Process exited with code 255.