3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo(): float{ return "String"; } var_dump(foo());
based on fJEmb
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught TypeError: Return value of foo() must be of the type float, string returned in /in/H4Asi:5 Stack trace: #0 /in/H4Asi(8): foo() #1 {main} thrown in /in/H4Asi on line 5
Process exited with code 255.
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/H4Asi on line 4
Process exited with code 255.