3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = array( 'abc' => 0, 'foo-bcd' => 1, 'foo-def' => 1, 'foo-xyz' => 0, ); $filtered = array_filter($input, function ($key) { return strpos($key, 'foo-') === 0; }, ARRAY_FILTER_USE_KEY); print_r($filtered);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.3.4, 8.3.6
Array ( [foo-bcd] => 1 [foo-def] => 1 [foo-xyz] => 0 )
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 ( [foo-bcd] => 1 [foo-def] => 1 [foo-xyz] => 0 )
preferences:
192.86 ms | 402 KiB | 300 Q