}Codice PHP:
/*$arrayIniziale... con chiavi [1] [2]....
[1] => Array
(
[0] =>
[1] =>
[2] =>
[3] =>
[4] => e
[5] => f
)
[2] => Array
(
[0] => a
[1] => b
[2] => c
[3] => d
[4] =>
[5] =>
)
*/
$newArray = array();
foreach($arrayIniziale as $key=>$val){
foreach($arrayIniziale[$key] as $key2=>$val2){
if($val2!=''){
$newArray[]=$val2;
}
}