How php deletes array elements and rearranges key values

This article mainly explains "php how to delete array elements and rearrange key values". The explanation in this article is simple and clear and easy to learn and understand. Please follow Xiaobian's train of thought to study and learn "php how to delete array elements and rearrange key values".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In PHP, you can use the array_splice () function if you want to delete an array element. The array_splice () function removes the selected element from the array and replaces it with a new element. Function will also return an array of removed elements.

Output result:

After you delete the array elements, you can use the sort () or rsort () functions to sort the array elements in ascending or descending order.

Echo "ascending sort:"; sort ($arr); var_dump ($arr); echo "descending sort:"; rsort ($arr); var_dump ($arr)

Output result:

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