3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(): void { } foo();
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
Output for 7.0.0 - 7.0.33
Fatal error: Uncaught TypeError: Return value of foo() must be an instance of void, none returned in /in/PVqNg:5 Stack trace: #0 /in/PVqNg(7): foo() #1 {main} thrown in /in/PVqNg on line 5
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/PVqNg on line 3
Process exited with code 255.

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