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 as expected class Foo { function __construct(){} } $a = null; $f = new Foo($a = 123); var_dump($a); // int(123) what???? class Foo2 { function Foo2(){} } $a = null; $f = new Foo2($a = 123); var_dump($a); // int(123) what????
Output for 7.1.0
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Foo2 has a deprecated constructor in /in/DXBo4 on line 14 int(123) Fatal error: Cannot declare class Foo, because the name is already in use in /in/DXBo4 on line 8
Process exited with code 255.
Output for 7.0.0 - 7.0.14
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Foo2 has a deprecated constructor in /in/DXBo4 on line 14 NULL Fatal error: Cannot declare class Foo, because the name is already in use in /in/DXBo4 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/DXBo4 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/DXBo4 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/DXBo4 on line 18
Process exited with code 255.
Output for 4.3.0 - 4.3.1
NULL Fatal error: Cannot redeclare class foo in /in/DXBo4 on line 8