重置array_diff（）的结果数组的键

In my application I am using array_diff function as -

$aDeleteCountryCodes = array_diff($aCurrentCountryCodes, $aNewCountryCodes);

Now what happens is, the resultant array, $aDeleteCountryCodes, some times comes as

Array
(
[2] => 213
)

and some times

Array
(
[2] => 213
[3] => 355
)

which messes my for loop that I use to delete records from database. For loop is like this-

for ($i=0; $i <= count($aDeleteCountryCodes); $++)
{
   // Delete record $aDeleteCountryCodes[$i]
}

what I want is the array to come as -

Array
(
[0] => 213
)

Array
(
[0] => 213
[1] => 355
)

so that the looping becomes easier. I hope I made it clear. How can I do this ?

1. Use array_values.
2. Use foreach instead of "manual for loops."

You can just get the values out into a new array:

$aDeleteCountryCodes = array_values($aDeleteCountryCodes) //Keys resetted.

Rather than reset the keys, it's preferable to just iterate over the existing keys:

   foreach ($aDeleteCountryCodes as $key => $value) {
     // delete goes here.
   }

Use array_values(array_diff($aCurrentCountryCodes, $aNewCountryCodes));