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run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo(string $str = null) : void { var_dump($str); } foo(null); foo('bar');
Output for 7.1.0 - 7.2.0
NULL string(3) "bar"
Output for 7.0.0 - 7.0.20
NULL Fatal error: Uncaught TypeError: Return value of foo() must be an instance of void, none returned in /in/1AJ8B:5 Stack trace: #0 /in/1AJ8B(7): foo(NULL) #1 {main} thrown in /in/1AJ8B on line 5
Process exited with code 255.
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/1AJ8B on line 3
Process exited with code 255.