How to use prev function

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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