<?php $defaults = array_fill_keys(['first_name', 'last_name', 'years'], null); var_export($defaults); $_GET = [ 'last_name' => 'doe', 'Hackers' => 'can be naughty', 'years' => 5 ]; var_export($_GET); $screened = array_intersect_key($_GET, $defaults); var_export($screened); $replaced = array_replace($defaults, $screened); var_export($replaced);
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