3v4l.org

run code in 300+ PHP versions simultaneously
<?php (function(double $x){})(1.2);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/389LR on line 3 Fatal error: Uncaught TypeError: {closure}(): Argument #1 ($x) must be of type double, float given, called in /in/389LR on line 3 and defined in /in/389LR:3 Stack trace: #0 /in/389LR(3): {closure}(1.2) #1 {main} thrown in /in/389LR on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 1 passed to {closure}() must be an instance of double, float given, called in /in/389LR on line 3 and defined in /in/389LR:3 Stack trace: #0 /in/389LR(3): {closure}(1.2) #1 {main} thrown in /in/389LR on line 3
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '(' in /in/389LR on line 3
Process exited with code 255.

preferences:
152.01 ms | 402 KiB | 183 Q