3v4l.org

run code in 300+ PHP versions simultaneously
<?php function bar(int $foo): string { return $foo; } $result = bar(123); var_dump($result); // Output: string(3) "123"
Output for 7.0.0 - 7.0.33, 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 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
string(3) "123"
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/EGpLn on line 3
Process exited with code 255.
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61.16 ms | 406 KiB | 5 Q