How to reset an array to a numeric index

This time, we'll bring you how to reset the array to a numeric index, resetting the array to a digital index of considerations, here is the actual case, take a look.

For example, a PHP array like this:

$arr = Array (   1 = ' Apple ',   3 = ' banana ',   5 = ' orange ');

You want to convert to an array like this:

$arr = Array (   0 = ' Apple ',   1 = ' banana ',   2 = ' orange ');

1, the recommended way Array_values method

This works for both normal and associative arrays

<?php  $arr = Array (   1 = ' Apple ',   3 = ' banana ',   5 = ' orange ');  Print_r (Array_values ($arr));  $arr 1 = array (   ' name ' = ' Jerry ',   ' age ' = +,   ' height ' = ' 18cm ');  Print_r (Array_values ($arr 1));

Output Result:

[Root@localhost php]# php array.php  Array (   [0] = Apple   [1] = Banana   [2] = orange) Array (
  [0] = Jerry   [1] [   2] = 18cm)

2. Using the Array_merge method

If the method only gives an array and the array is a numeric index, the key name is re-indexed in a sequential manner. So it can only be applied to numeric indexes.

<?php  $arr = Array (   1 = ' Apple ',   3 = ' banana ',   5 = ' orange ');  Print_r (Array_merge ($arr));  $arr 1 = array (   ' name ' = ' Jerry ',   ' age ' = +,   ' height ' = ' 18cm ');  Print_r (Array_merge ($arr 1));

Output Result:

[Root@localhost php]# php array.php  Array (   [0] = Apple   [1] = Banana   [2] = orange) Array (
  [name] = Jerry   [age] =   [height] = 18cm)

3. Loop traversal

The most primitive way, bloated and not elegant, strongly resisted.

<?php  function Resetarr ($arr) {   $temp = array ();   foreach ($arr as $v) {     $temp [] = $v;   }   return $temp; }  $arr = Array (   1 = ' Apple ',   3 = ' banana ',   5 = ' orange ');  Print_r (Resetarr ($arr));  $arr 1 = array (   ' name ' = ' Jerry ',   ' age ' = +,   ' height ' = ' 18cm ');  Print_r (Resetarr ($arr 1));

Believe that you have read the case of this article you have mastered the method, more exciting please pay attention to the PHP Chinese network other related articles!

Recommended reading:

How PHP generates random numbers

Force download QR Code image