php Introduction to Create and Delete Directory Functions and Recursive Delete Directory Function Sharing

mkdir ()--New Directory

 In fact, in fact, the   Syntax: bool mkdir (string pathname [,int mode])

 In fact, in fact, the   Try to create a new 1 By  pathname  The directory specified by the. 

rmdir ()--Delete Directory

 In fact, in fact, the   Syntax: bool rmdir ( string dirname )

 In fact, in fact, the   Try to delete  dirname  The directory specified by the.   The directory must be empty and have corresponding permissions. Returns if successful  TRUE If it fails, it returns 

FALSE . 

unlink--Delete Files

 In fact, in fact, the   Syntax: bool unlink ( string filename )

 In fact, in fact, the   Delete  filename . And  Unix C  Adj.  unlink()  Functions are similar. Returns if successful  TRUE If it fails, it returns  FALSE . 

In PHP, you can easily create a new directory using the mkdir () function by passing in a directory name. However, the function rmdir () used to delete directories can only delete one empty directory and the directory must exist. If the directory is not empty, you need to enter the directory first, use the unlink () function to delete every file in the directory, and then go back to delete the empty directory. If there are still directories in the directory and the subdirectories are not empty, the recursive method should be used. The program code for custom recursive function to delete directory is as follows:

<?php

// Custom function recursively deletes the entire directory 

function delDir($directory){

    if(file_exists($directory)){      // If it doesn't exist rmdir() Function will make an error 

        if($dir_handle = @opendir($directory)){       // Open the directory and determine whether it was successfully opened 

            while($filename = readdir($dir_handle)){       // Loop through all the files in the directory 

               if($filename != "."&& $filename != ".."){       //1 Be sure to exclude two special directories 

                   $subFile = $directory."/".$filename;       // Connect the subfiles in the directory with the current directory 

                   if(is_dir($subFile))        // If it is a directory, the condition holds 

                   delDir($subFile);       // Call its own function recursively and delete subdirectories 

                   if(is_file($subFile))      // If it is a file, the condition holds 

                   unlink($subFile);           // Delete this file directly 

               }

            }

            closedir($dir_handle); // Close file resources 

            rmdir($directory); // Delete an empty directory 

         }

      }

}

 

dirDir("phpMyAdmin"); // Call delDir() Function, the "in the directory where the program is located" phpMyAdmin "File deletion 

?>

Of course, you can also delete non-empty directories by calling the operating system command "rm-rf", but try not to use them from the perspective of security and cross-platform.