3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Foo {} $a = null; $f = new Foo($a = 123); var_dump($a); // NULL class Foo { function __constructor(){} } $a = null; $f = new Foo($a = 123); var_dump($a); // int(123)
Output for 7.1.0
int(123) Fatal error: Cannot declare class Foo, because the name is already in use in /in/RZCQN on line 8
Process exited with code 255.
Output for 7.0.0 - 7.0.14
NULL Fatal error: Cannot declare class Foo, because the name is already in use in /in/RZCQN on line 8
Process exited with code 255.
Output for hhvm-3.12.0
int(123) Fatal error: Uncaught Error: Class already declared: Foo in /in/RZCQN:8 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.0
int(123) Fatal error: Class already declared: Foo in /in/RZCQN on line 8
Process exited with code 255.
Output for 5.2.0 - 5.6.28
NULL Fatal error: Cannot redeclare class Foo in /in/RZCQN on line 8
Process exited with code 255.
Output for 4.3.2 - 5.0.5, 5.1.1 - 5.1.6
NULL Fatal error: Cannot redeclare class foo in /in/RZCQN on line 8
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/RZCQN on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1
NULL Fatal error: Cannot redeclare class foo in /in/RZCQN on line 8