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PHP prev() function is used to rewind the internal pointer of the array one bit.
php prev() function Syntax
Function: Point the internal pointer to the previous element in the array and output it.
Syntax:
prev(array)
Parameters:
array Required. Specify the array to be operated on.
Note: If the array contains empty cells, or the value of the cell is 0, this function will also return FALSE when encountering these cells.
php prev() function example 1
<?php $people = array("西门", "灭绝", "无忌"); $people2 = next($people); //指向下一个元素 灭绝 echo $people2; echo "<br>"; $people3 = prev($people);//指向上一个元素 西门 echo $people3; ?>
Output:
灭绝 西门
php prev() function example 2
<?php $arr = array("peter", "官人", "欧阳克"); $arr2 = next($arr); //指向下一个元素 官人 echo $arr2; echo "<br>"; $arr3 = prev($arr);//指向上一个元素 peter echo $arr3; ?>
Output:
官人 peter
This article is an introduction to the PHP prev function. I hope it will be helpful to friends in need!
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