How PHP deletes all files and folders under a path

This article mainly share with you how PHP deletes all files and folders under a path, PHP iterates through all the files and folders within a folder, and removes all the files from all folders and subfolders, recursively realizing the effect of emptying a directory, and the code is simple and practical.

It is also suitable to clean up the cache in thinkphp, in thinkphp can write the following code to the./application/admin/common/function.php file, and then call this function in the controller to clean up the operation.

The function to use:

Scandir ($path)    iterates through all the files in a folder and returns an array.    unlink ($filename) to    delete the file.    rmdir ($path)    Delete only empty folders

<?php//Set the folder to be deleted  $path = "./application/runtime/";  After emptying the folder function and emptying the folder, delete the empty folder function  Deldir ($path) {   //If the directory continues if   (Is_dir ($path)) {    // Scans all folders and files within a folder and returns an array   $p = Scandir ($path);   foreach ($p as $val) {    //exclude directories in. and.    if ($val! = "." && $val! = "...") {     //If directory is recursive subdirectory, continue operation     if (Is_dir ($path. $val)) {      //subdirectory Operation Delete folder and file      Deldir ($path. $val. '/');      Delete empty folder @rmdir after directory emptying      ($path. $val. '/');     } else{      //If the file is deleted directly      unlink ($path. $val);}}}}  //Call function, incoming path Deldir ($path);