PHP array Delete element re-index method

Deleting an element in an array can be used directly with the unset, the missing element will be filled and the array will be re-indexed.

If you want to delete an element in an array, you can use the unset directly:

<? PHP $arr Array (' A ', ' B ', ' C ', ' d '); unset ($arr[1]); Print_r ($arr);? >

Print_r ($arr), the result is not that, the end result is an Array ([0] = a [2] = c [3] + D)
So how can the missing elements be filled and the array will be re-indexed? The answer is
Array_splice (): www.jbxue.com

<? PHP $arr Array (' A ', ' B ', ' C ', ' d '); Array_splice ($arr, (); Print_r ($arr);? >

Print_r ($arr), the result is a (www.jb51.net) Rray ([0] = a [1] = + c [2] + D)
To delete an array-specified element
Array_search () more practical
The Array_search () function, like In_array (), looks for a key value in the array. If the value is found, the key name of the matching element is returned. Returns false if not found

$array Array (' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 '); $del _value = 3; unset ($array[array_search($del _value$array)]); // Delete this element using unset Print_r ($array);

Output
Array (' 1 ', ' 2 ', ' 4 ', ' 5 ');
It is also possible to re-index an array if you need to re-establish an array after using a foreach traversal of the deleted array.

PHP array Delete element re-index method