3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f($current_day, $delay) { return ((((min($current_day, 5))+($delay-1))%5)+1); } for($i = 1; $i < 8; $i++) printf("f(%d, 1) => %d\n", $i, f($i, 1)); for($i = 1; $i < 8; $i++) printf("f(%d, 2) => %d\n", $i, f($i, 2));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 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 - 8.3.4, 8.3.6
f(1, 1) => 2 f(2, 1) => 3 f(3, 1) => 4 f(4, 1) => 5 f(5, 1) => 1 f(6, 1) => 1 f(7, 1) => 1 f(1, 2) => 3 f(2, 2) => 4 f(3, 2) => 5 f(4, 2) => 1 f(5, 2) => 2 f(6, 2) => 2 f(7, 2) => 2
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 f(1, 1) => 2 f(2, 1) => 3 f(3, 1) => 4 f(4, 1) => 5 f(5, 1) => 1 f(6, 1) => 1 f(7, 1) => 1 f(1, 2) => 3 f(2, 2) => 4 f(3, 2) => 5 f(4, 2) => 1 f(5, 2) => 2 f(6, 2) => 2 f(7, 2) => 2

preferences:
190.91 ms | 402 KiB | 311 Q