3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public foo(string $foo = null) { echo $foo; } } $foo = new Foo; $foo->foo(); $foo->foo(null); $foo->foo('bar');
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.15
Parse error: syntax error, unexpected 'foo' (T_STRING), expecting variable (T_VARIABLE) in /in/UMnnY on line 5
Process exited with code 255.
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