How to solve the problem of garbled characters in php file traversal

The solution to php traversing garbled files: first create a PHP sample file; then change the file encoding to "GBK"; finally, use the "read_all" method to traverse all files in the folder.

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I was deeply hit by the recent interview and returned to my hometown in Henan for more than a year After giving birth to a baby, I found that I could no longer keep up with the development of the IT industry

During the interview process, I found that this question was included in the written examination questions of many companies, and it is also a function that is often used at work.

Isn’t this a piece of cake?

<?php
/*
* 遍历文件夹下所有文件
*
* 作者：郭猛
* 邮箱：martin.guo@qq.com
*
*/

function read_all ($dir){
    if(!is_dir($dir)) return false;

    $handle = opendir($dir);

    if($handle){
        while(($fl = readdir($handle)) !== false){
            $temp = $dir.DIRECTORY_SEPARATOR.$fl;
            //如果不加  $fl!=&#39;.&#39; && $fl != &#39;..&#39;  则会造成把$dir的父级目录也读取出来
            if(is_dir($temp) && $fl!=&#39;.&#39; && $fl != &#39;..&#39;){
                echo &#39;目录：&#39;.$temp.&#39;<br>&#39;;
                read_all($temp);
            }else{
                if($fl!=&#39;.&#39; && $fl != &#39;..&#39;){

                    echo &#39;文件：&#39;.$temp.&#39;<br>&#39;;
                }
            }
        }
    }
}

read_all(&#39;D:\wamp\www\test&#39;);

?>

Open the browser with confidence

<?php /* * 遍历文件夹下所有文件 * * 作者：郭猛 * 邮箱：martin.guo@qq.com * */ function read_all ($dir){ if(!is_dir($dir)) return false; $handle = opendir($dir); if($handle){ while(($fl = readdir($handle)) !== false){ $temp = iconv(&#39;GBK&#39;,&#39;utf-8&#39;,$dir.DIRECTORY_SEPARATOR.$fl);//转换成utf-8格式 //如果不加 $fl!=&#39;.&#39; && $fl != &#39;..&#39; 则会造成把$dir的父级目录也读取出来 if(is_dir($temp) && $fl!=&#39;.&#39; && $fl != &#39;..&#39;){ echo &#39;目录：&#39;.$temp.&#39;<br>&#39;; read_all($temp); }else{ if($fl!=&#39;.&#39; && $fl != &#39;..&#39;){ echo &#39;文件：&#39;.$temp.&#39;<br>&#39;; } } } } } read_all(&#39;D:\wamp\www\test&#39;); ?>

Add iconv to the 17th line of code, it must be ok this time

by is_dir! The following file has not been read!

I tested it alone

<?php

$dir=&#39;D:\wamp\www\test\test_dir\子目录&#39;;
var_dump(is_dir($dir));

?>

It really doesn’t work in the utf8 encoding format.

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