3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "1 2 3 10 12"; $data = [ "1" => "Book", "2" => "Paper", "3" => "Pencil", "10" => "Eraser", "11" => "Ruler", ]; var_dump(array_intersect_key($data, array_fill_keys(explode(" ", $string), "")));
Output for 5.6.0 - 5.6.40, 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 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
array(4) { [1]=> string(4) "Book" [2]=> string(5) "Paper" [3]=> string(6) "Pencil" [10]=> string(6) "Eraser" }
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(4) { [1]=> string(4) "Book" [2]=> string(5) "Paper" [3]=> string(6) "Pencil" [10]=> string(6) "Eraser" }

preferences:
285.62 ms | 402 KiB | 292 Q