Some common php simple command code highlights _ PHP Tutorial

Source: Internet
Author: User
Some common php simple command code highlights. Delete: use if(file_exists(file.htm) to check whether this file exists. if (file_exists (chat), check whether this folder rename (index. php, index. php is renamed in to delete and build:
Reference
If (file_exists ("file.htm") // check whether this file exists
If (file_exists ("chat") // check whether this folder exists
Rename ('index. php', 'index'); // rename index. php to index
Fopen ("name. php", "a +"); // create a file
Mkdir ("boot", "0777"); // create a folder and set the property to 777.
Rmdir ("include"); // delete a folder
Unlink ("index. php"); // delete an object

Database query:
Reference
$ Db = new db_query;
$ Db-> connect ();
$ Db-> query ("drop database $ DbName;"); // $ dbname indicates the DATABASE name.

Connection:
Reference
Header ("location: index. php"); // go to the webpage
Echo "Step 2: select whether to delete all files [chat room]
"; // Write the code
Unset ($ tmp); // clear the original cache
Require ("global. php"); // cache
Print <eot // write code
Eot;

References if (file_exists ("file.htm") // check whether this file exists if (file_exists ("chat") // check whether this folder rename ('index. php ', 'index'); // Set index. php is renamed in...

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.