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<?php $defaults = [ "shoes" => 'no', "pants" => 'no', "skirt" => 'no', "socks" => 'no', "jacket" => 'no', ]; $_POST['id'] = '1'; $_POST['clothes'] = "shoes, socks, jacket"; $ticked = array_fill_keys(explode(', ', $_POST['clothes']), 'yes'); $yesses = array_intersect_key($ticked, $defaults); $row = ['id' => (int) $_POST['id']] + array_replace($defaults, $yesses); var_export($row);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
array ( 'id' => 1, 'shoes' => 'yes', 'pants' => 'no', 'skirt' => 'no', 'socks' => 'yes', 'jacket' => 'yes', )

preferences:
50.7 ms | 402 KiB | 62 Q