Online PHP editor | refs for cB4vF

<?php $array = [ ['BLA' => 'bis 050'], ['BLA' => 'bis 060'], ['BLA' => 'bis 070'], ['BLA' => 'bis 080'], ['BLA' => 'bis 090'], ['BLA' => 'bis 100'], ['BLA' => 'bis 110'], ['BLA' => 'bis 120'], ['BLA' => 'gr 120'], ]; $map = [ ['BLA' => 'bis 050', 'Amount' => '832'], ['BLA' => 'bis 060', 'Amount' => '448'], ['BLA' => 'bis 090', 'Amount' => '1216'], ['BLA' => 'bis 100', 'Amount' => '1024'], ['BLA' => 'bis 110', 'Amount' => '8965'] ]; $lookup = array_column($map, 'Amount', 'BLA'); var_export( array_map( fn($row) => $row + ['Amount' => $lookup[$row['BLA']] ?? 0], $array ) );