php rmdir uses recursive function to delete non-empty directories

We all know that the php rmdir() function is used to delete empty directories, but if we want to delete a non-empty directory, we must delete the files or subdirectories in the non-empty directory. This article introduces how to use recursive functions to delete in php Non-empty directory, friends in need can refer to it.
First, let me introduce you to the rmdir() function.

php rmdir() function

rmdir — delete empty directory

Syntax

bool rmdir ( string $dirname [, resource $context ] )

Try to delete the directory specified by dirname. The directory must be empty and must have appropriate permissions. An E_WARNING level error will be generated on failure.
Parameters:

dirname: The path to the directory.

context: Added support for context in PHP 5.0.0.

php rmdir() deletes a non-empty directory

As mentioned above, the rmdir() function can only delete empty directories. If it is a non-empty directory, you need to enter the directory first and use the unlink() function to delete the directory. Delete every file, then come back and delete the empty directory. If there are subdirectories in the directory and the directory is not empty, you need to use the recursive method. The source code of the custom recursive function to delete a directory is as follows:

<?php
/* 作者：码农教程  http://www.manongjc.com/article/27.html  */
function delDir($directory){//自定义函数递归的函数整个目录
    if(file_exists($directory)){//判断目录是否存在，如果不存在rmdir()函数会出错
        if($dir_handle=@opendir($directory)){//打开目录返回目录资源，并判断是否成功
            while($filename=readdir($dir_handle)){//遍历目录，读出目录中的文件或文件夹
                if($filename!=&#39;.&#39; && $filename!=&#39;..&#39;){//一定要排除两个特殊的目录
                    $subFile=$directory."/".$filename;//将目录下的文件与当前目录相连
                    if(is_dir($subFile)){//如果是目录条件则成了
                        delDir($subFile);//递归调用自己删除子目录
                    }
                    if(is_file($subFile)){//如果是文件条件则成立
                        unlink($subFile);//直接删除这个文件
                    }
                }
            }
            closedir($dir_handle);//关闭目录资源
            rmdir($directory);//删除空目录
        }
    }
}

delDir("mydir");//调用delDir函数

?>

In addition to processing recursive deletion of non-empty directories, we can also use the operating system command "rm -rf" to delete non-empty directories, but we must also consider security and cross-platform aspects. Try not to use it.