Resetting keys of resultant array of array_diff()

Question

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 ?

deceze · Accepted Answer · 2012-03-30 06:05:42Z

3

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

answered Mar 30, 2012 at 6:05

deceze♦

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Comments

Adam Hupp · Accepted Answer · 2012-03-30 06:06:06Z

2

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

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

answered Mar 30, 2012 at 6:06

Adam Hupp

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Comments

everconfusedGuy · Accepted Answer · 2012-03-30 06:06:57Z

2

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

answered Mar 30, 2012 at 6:06

everconfusedGuy

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Comments

F21 · Accepted Answer · 2012-03-30 06:03:56Z

1

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

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

answered Mar 30, 2012 at 6:03

F21

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