Re-indexing PHP array after rejecting elements

PHP array after deleting elements and re-indexing
Do you know that there is a way to re-index an element after the PHP array is removed?
$tmp = Array (+/-);
unset ($tmp ["1"]);
echo "

";
Print_r ($TMP);


Operation Result:
Array
(
     [0] = 1
     [2] = 3
)

And the result I need is:
Array
(
     [0] = 1
     [1] = 3
)




Does PHP have to provide this function to re-index  kneeling thanks!

------Solution--------------------
Array_values ()
------Solution--------------------
Print_r (Array_values ($tmp));
------Solution--------------------
The Array_values () function returns an array containing all the key values in the given array, but does not preserve the key names
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