PHP - 添加到数组

How do I add to the end of each sub array? Here is an example.

$products = array( 
 array( Code => 'TIR', 
  Description => 'Tires', 
  Price => 100 
 ),
 array( Code => 'OIL', 
  Description => 'Oil', 
  Price => 10 
 ),
 array( Code => 'SPK', 
  Description => 'Spark Plugs', 
  Price =>4 
 ) 
);

I want to add SKU=>1234 after Price in each array. Thanks

Loop across the array and use references to modify it:

foreach ($products as &$v) {
  $v['SKU'] = 1234;
}

foreach ( $products as &$arr )
    $arr['SKU'] = 1234;

Loop over the array using a reference (Note the ampersand before the $val):

foreach ( $products as &$val ){
    $val['SKU'] = 1234;
}

That way rather than $val being a copy of the array element, it is a reference to the value, so altering it alters the value held in $products.

foreach ($products as $k=>$v){
    $v['SKU']=1234;
    $products[$k]=$v;
}
print_r($products);