PHP code to traverse all files and sub-files in a folder

This article mainly introduces the code for php to traverse all files and sub-files in a folder. It has certain reference value. Now I share it with you. Friends in need can refer to it

php traversal All files and sub-files under a folder

 1 <?php
 2 /** 
 3  * 将读取到的目录以数组的形式展现出来 
 4  * @return array 
 5  * opendir() 函数打开一个目录句柄，可由 closedir()，readdir() 和 rewinddir() 使用。 
 6  * is_dir() 函数检查指定的文件是否是目录。 
 7  * readdir() 函数返回由 opendir() 打开的目录句柄中的条目。 
 8  * @param array $files 所有的文件条目的存放数组 
 9  * @param string $file 返回的文件条目
 10  * @param string $dir 文件的路径
 11  * @param resource $handle 打开的文件目录句柄
 12  */
 13 function my_scandir($dir)
 14 {
 15     //定义一个数组
 16     $files = array();
 17     //检测是否存在文件
 18     if (is_dir($dir)) {
 19         //打开目录
 20         if ($handle = opendir($dir)) {
 21             //返回当前文件的条目
 22             while (($file = readdir($handle)) !== false) {
 23                 //去除特殊目录
 24                 if ($file != "." && $file != "..") {
 25                     //判断子目录是否还存在子目录
 26                     if (is_dir($dir . "/" . $file)) {
 27                         //递归调用本函数，再次获取目录
 28                         $files[$file] = my_scandir($dir . "/" . $file);
 29                     } else {
 30                         //获取目录数组
 31                         $files[] = $dir . "/" . $file;
 32                     }
 33                 }
 34             }
 35             //关闭文件夹
 36             closedir($handle);
 37             //返回文件夹数组
 38             return $files;
 39         }
 40     }
 41 }
 42 
 43 echo "<pre class="brush:php;toolbar:false">";
 44 print_r(my_scandir("./aa")); //电脑的文件路径即可

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