Conforno di 2 array associativi x chiave e modifica dei valori

[nicola75ss]

La funzione è presa dai commenti di array_merge_recursive

<?php
$prodotti1 = array(3=>2,5=>1,7=>3,1=>2);
$prodotti2 = array(9=>3,5=>2);

echo '<pre>';
print_r($prodotti1);
print_r($prodotti2);


function array_merge_recursive_keep_keys( $arrElement1 , $arrElement2 , $intCount = 0 ) {

       $arrNew = array();
      
       $arrElement1Keys = array_keys( $arrElement1 );
       $arrElement2Keys = array_keys( $arrElement2 );
      
       $arrDifKeys1 = array_diff( $arrElement1Keys, $arrElement2Keys );
       $arrDifKeys2 = array_diff( $arrElement2Keys, $arrElement1Keys );
       $arrInter    = array_intersect( $arrElement1Keys , $arrElement2Keys );

       foreach( $arrDifKeys1 as $strKey1)
       {
           $arrNew[ $strKey1 ] = $arrElement1[ $strKey1 ];
       }
       foreach( $arrDifKeys2 as $strKey2)
       {
           $arrNew[ $strKey2 ] = $arrElement2[ $strKey2 ];
       }
       foreach( $arrInter as $strInterKey )
       {
           if( is_array( $arrElement1[ $strInterKey ] ) && is_array( $arrElement2[ $strInterKey ] ) )
           {
               $intCount++;
               $arrNew[ $strInterKey ] = array_merge_recursive_keep_keys( $arrElement1[ $strInterKey ] , $arrElement2[ $strInterKey ] , $intCount );
           }
           elseif( is_array( $arrElement1[ $strInterKey ] ) || is_array( $arrElement2[ $strInterKey ] ) )
           {
               $arrNew[ $strInterKey ][]    =  $arrElement1[ $strInterKey ];
               $arrNew[ $strInterKey ][]    =  $arrElement2[ $strInterKey ];
           }
           else
           {
               $arrNew[ $strInterKey ] = array();
               $arrNew[ $strInterKey ][] = $arrElement1[ $strInterKey ];
               $arrNew[ $strInterKey ][] = $arrElement2[ $strInterKey ];
           }
       }
       return $arrNew;
}    

$unisci = array_merge_recursive_keep_keys($prodotti1,$prodotti2);

print_r($unisci);

foreach($unisci as $k => $v) {
    if (!is_array($v) )
    $finale[$k] = $v;
    else {
        $tot = 0;
        foreach($v as $value)
            $tot+=$value;
        $finale[$k] = $tot;
    }
}

ksort($finale);
reset($finale);
print_r($finale);
?>