3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(int $foo): int { return $foo+1; } print foo(1); // comment
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, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
2
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/4iuaQ on line 3
Process exited with code 255.
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149.42 ms | 402 KiB | 183 Q