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<?php $_POST['foo'] = ''; $_POST['bar'] = ''; $_POST['baz'] = ''; // fields $fields = [['Label_Field' => 'foo']]; // just labels $labels = array_column($fields, 'Label_Field'); // filter $_POST by keys which are in $labels $data = array_filter($_POST, fn($k) => in_array($k, $labels), ARRAY_FILTER_USE_KEY); print_r($data);
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
Array ( [foo] => )
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] => )
Output for 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW), expecting ')' in /in/vna02 on line 14
Process exited with code 255.
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