在PHP中取消多维数组 [英] Unsetting multi-dimensional arrays in php

问题描述

我正在尝试在php的会话数组中取消设置某个值.我想问一下是否有更好的方法可以做到这一点:

I'm trying to unset a certain value in a session array in php. I would like to ask if there's a better way in doing this:

    <?php

    session_start();


    if(isset($_GET['Uname'])){
        echo "Uname is set!";


            $uname=$_GET['Uname'];


        echo count($_SESSION['user']);

        for($x=0; $x < count($_SESSION['user']); $x++ ){

            if($_SESSION['user'][$x]['Uname']==$uname){

                unset($_SESSION['user'][$x]['Uname']);
            }

        }


    }else{


    }

?>

是否可以使用foreach循环来完成同一件事?或其他方法

Is it possible to accomplish the same thing using a foreach loop?Or another method

推荐答案

确定取消设置user应该可以解决该问题.您不需要循环.尝试执行此操作，刷新页面肯定会一次设置值，而其他未设置它的值.

Sure unsetting user should solve that. You don't need a loop. Try this, refreshing page will surely set value at one time and other unset it's value.

<?php

session_start();

$array = array('arr', 'arr', 'arr', 'arr', 'arr', 'arr');

if(isset($_SESSION['user']))
{
    print_r($_SESSION['user']);
    unset($_SESSION['user']);   
}
else{
    $_SESSION['user'] = $array;
    echo "user session was set";
}

根据此问题， https://stackoverflow.com/questions/4891301/top -bad-practices-in-php 中，在循环中使用count()是一个坏习惯.

And according to this question, https://stackoverflow.com/questions/4891301/top-bad-practices-in-php , using count() in loop is a bad practice.

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