Php uses unset () to delete a cell (key) in an array _ PHP Tutorial

Php uses unset () to delete a cell (key) in an array. Php uses unset () to delete a cell (key) in an array. This article mainly introduces how php uses unset () to delete a cell (key) in an array, this example analyzes how the unset function deletes a unit (key) in an array using unset () when deleting php.

This article describes how php uses unset () to delete a unit (key) in an array. The example shows how to use the unset function to delete an array unit, for more information, see

This example describes how php uses unset () to delete a cell (key) in an array. Share it with you for your reference. The specific analysis is as follows:

Unset can delete a variable or a unit in the array. However, it should be noted that the array will not be re-indexed.

Example:

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$ Arr = array ("Chaoyang district", "Haidian District", "Xicheng District", "Dongcheng District", "Fengtai district "); Unset ($ arr [3]); Echo" "; print_r($arr); ?>

The output result is as follows:

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Array ( [0] => Chaoyang District [1] => Haidian District [2] => Xicheng District [4] => Fengtai District )

I hope this article will help you with php programming.

Using () to delete a cell (key) in an array This article mainly introduces how php uses unset () to delete a cell (key) in an array, the unset function is analyzed in the instance...