PHP uses unset () to remove a cell (key) from an array _php tutorial

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

This article mainly introduces PHP using unset () to delete a cell (key) in the array method, an example of the unset function in the deletion of the array unit of the use of skills, the need for friends can refer to the next

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

Unset can either delete a variable or delete a cell in the array. It is important to note, however, that the array does not rebuild the index.

Examples are as follows:

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$arr = Array ("Chaoyang", "Haidian", "Xicheng", "Dongcheng", "Fengtai"); Unset ($arr [3]); echo " "; Print_r ($arr); ?>

The output results are as follows:

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

I hope this article is helpful to everyone's PHP programming.

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