$dimensionnames=array("name1","name2","name3","name4","name5"); $dimensionsizes=array("size1","size2","size3","size4","size5"); if($dname1 != ""){ $dimensionnames['name1'] = $dname1; $dimensionsizes['size1'] = $dsize1; } if($dname2 != ""){ $dimensionnames['name2'] = $dname2; $dimensionsizes['size2'] = $dsize2; } if($dname3 != ""){ $dimensionnames['name3'] = $dname3; $dimensionsizes['size3'] = $dsize3; } if($dname4 != ""){ $dimensionnames['name4'] = $dname4; $dimensionsizes['size4'] = $dsize4; } if($dname5 != ""){ $dimensionnames['name5'] = $dname5; $dimensionsizes['size5'] = $dsize5; } print_r($dimensionnames);