Online PHP editor | output for GbUiO

<?php $lexer = [ // will be normalized from => to 'Vorname' => 'Vorname', 'Nachname' => 'Nachname', 'Name' => 'Nachname', ]; $validator = [ // must be present 'Vorname', 'Nachname', ]; $data = [ // raw input 'Vorname' => 'Max', 'Name' => 'Mustermann', 'Alter' => '32', ]; function normalize($data, $lexer){ $result = []; foreach($data as $key => $val){ if(isset($lexer[$key])){ $result[$lexer[$key]] = $val; } } return $result; } echo 'translation '; print_r($lexer); echo 'validation '; print_r($validator); echo 'raw '; print_r($data); echo 'normalized '; $normalized = normalize($data, $lexer); print_r($normalized); echo 'diff raw '; print_r(array_diff(array_keys($data), $validator)); echo 'diff normalized '; print_r(array_diff(array_keys($normalized), $validator));