3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types = 1); function add(float $a, float $b): float { return $a + $b; } add(1, 2); // float(3)
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Warning: Unsupported declare 'strict_types' in /in/b9OAE on line 3 Parse error: syntax error, unexpected ':', expecting '{' in /in/b9OAE on line 5
Process exited with code 255.
preferences:
302.52 ms | 402 KiB | 376 Q