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run code in 300+ PHP versions simultaneously
<?php function hello(int $n, ?bool $m = false): string { $m = $m ? 'true' : 'false'; return "The number {$n} is called {$m}"; } $a = [1, 2, 3, 4, 5]; $c = array_map('hello', $a, array_fill(0,2,true)); print_r($c);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.27, 8.4.1 - 8.4.14
Array ( [0] => The number 1 is called true [1] => The number 2 is called true [2] => The number 3 is called false [3] => The number 4 is called false [4] => The number 5 is called false )
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 Array ( [0] => The number 1 is called true [1] => The number 2 is called true [2] => The number 3 is called false [3] => The number 4 is called false [4] => The number 5 is called false )

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