3v4l.org

run code in 300+ PHP versions simultaneously
<?php function add(int $a, int $b) { return $a + $b; } $a = 5; $b = 3; settype($a, "integer"); settype($b, "integer"); echo(add($a, $b));
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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
8
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Catchable fatal error: Argument 1 passed to add() must be an instance of int, integer given, called in /in/s2PYc on line 10 and defined in /in/s2PYc on line 3
Process exited with code 255.

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