I'm using unset($my_array[$i]) to delete an element in this array, but I don't know how to get the keys propperly again. After deleting the element the array looks like this:

Array ( [0] => 0 [1] => 1 [2] => 3 [3] => 4 [4] => 5 [5] => 6 )

As you can see the key 2 is not given anymore which gives me terrible headaches. I'd like to get normal keys back again which start at 0 and end at 5.


Now I'm sure there is a normal function for this, but I just can't find it in the manual.

Not sure there is a function to do what you're asking.

An alternative could be to use a loop with a new array, going through the original array, pushing the wanted values into the new array and just ignoring the unwanted value?

That's what you asking right? How to keep the original order of keys, but still removing the element... ?

What does the rest of your script do with the array? Is it possible that instead of unsetting parts of it, you could just set them to -1 or some other special value thatyour script would interpret as meaning 'don't use this one'?

ie your array above would look like
Array ( [0] => 0 [1] => 1 [2] => -1 [3] => 3 [4] => 4 [5] => 5 )

now that's bloody clever!

That's not clever - that's a workaround with lots of possible errors O_o Whenever possible you should rather consider copying the whole array and redefine everything by hand than inserting special characters. These special characters have effects on different behaviours of the array, the total count for example, and you'll also need to take extra care for this special character, not to mention the extra efford you'll have when you actually want to use that special character.

I found the array_merge() function to do exactly what I want.

If only one array is given and the array is numerically indexed, the keys get reindexed in a continuous way.

So here is what you do:

PHP Code:

unset($my_array[$i]); //delete one element. The key is deleted and accesing it will output ' '
//output would now be Array ( [0] => 0 [1] => 1 [2] => 3 [3] => 4 [4] => 5 [5] => 6 ) 
 
$my_array = array_merge($my_array); //reassign the keys in continous order
print_r(array_keys($my_array)); //Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 ) 


Note that you might need to adjust your code to the reduced length of this array. To avoid that you can always use count($my_array)

Did you just... answer your own question?

Simpledoo. There's a function called array_values which simply takes an array and returns all the values back in a properly enumerated array.

PHP Code:

 $arr = array_values ($arr);