There are two functions under Linux that can be used to delete a file:#include int unlink (constchar *pathname);The unlink function removes a name from the file system, and if the name is the last link of the file and the file is not opened by any
PHP comes with rmdir, can only delete empty directory, this rrmdir can be recursively delete directories and all files under the directory, but use to be careful oh, do not delete all the filesfunctionRrmdir ($dir) {if(Is_dir($dir))
There are several issues to consider when using temporary files:
Ensure that file names between temporary files do not conflict with each other.
Ensure that the contents of the temporary files are not peeked, deleted and modified by other users or
This article introduces some techniques to introduce the defense of the PHP Trojan attack, through these aspects you can better guard against Trojan horse program.
1, prevent from jumping out of the web directory
First modify httpd.conf, if
The inode of the file defines the size of the file, the characteristics of all files, and so on. Each file and directory has its own unique inode number. But why use Inode to delete files, instead of using the usual RM-RF command? The reason is if
1, prevent from jumping out of the web directory
First modify httpd.conf, if you only allow your PHP script to operate in a Web directory, you can also modify the httpd.conf document to restrict the operation Path of PHP. For example, if your web
So is there a way to automatically clean up temporary folders?
The following code is a simple time to clean up the file under the folder PHP code.
PS: This code, if you do not restart the site will continue to perform, so only for the local
This is the fourth document of the system. Upload.php is primarily responsible for the verification of filename
, uploading file and file address archive
File Upload
Uploaded column $col, $upfile uploaded file, $writer author, $intro profile
$
PHP3 is a very powerful CGI scripting language, with its linguistic features largely rooted in C, which is more like Perl in terms of its implementation, and its intrinsic support for the database makes it a powerful competitor for ASPs.First, there
**
* Delete all subfolders under the folder at the specified time (after a few seconds)
* @param $dir String file path
* @param $sec String deletion time
* @param $file _type string file type
*/
function Delfile ($dir, $sec = ' _type= ', $file ')
Author: Alpha from: http://www.54hack.info/
1. Prevent jumping out of the web directory
Modify httpd. conf. If you only allow Your php script program to operate in the web directory, you can also modify the httpd. conf file to limit the php
Features OverviewThe init process is the first process launched by the Android kernel, with a process number (PID) of 1, which is the ancestor of all the processes in the Android system, so it is shouldering the important responsibility of system
Php regularly deletes files in a folder (clears cached files ). Is there any way to automatically clear temporary folders? The following code is a php code that cleans up files in a folder at regular intervals. Ps: If this code is always executed
Sometimes there are more and more temporary files generated in the cached folder of the website. if the files are not cleaned up for a long time, tens of thousands of cached files will exist in the folder, and many ftp tools may not be able to
Basic operations of a file system. Copy the code as follows :? Phperror_reporting (2047); ** ClassIO (snkedevil completed 03.25.04) (v1.0.0.0) ** [description] * this class is used to process the file system. ** [Function] ***** list_dir (
The code
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