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

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

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:

<?php$arr = Array ("Chaoyang", "Haidian", "Xicheng", "Dongcheng", "Fengtai"), Unset ($arr [3]); echo "
";p Rint_r ($arr);? 
 
 The output is as follows: 
 
array ([0] = Chaoyang [1] = Haidian [2] = Xicheng [4] = Fengtai) 
 
 Hope this article The above is helpful to the PHP programming of everyone. 
 
 
 
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