X
HOME HTML CSS JAVASCRIPT SQL PHP JQUERY XML ASP.NET MORE...
REFERENCES | EXAMPLES | FORUM | ABOUT

PHP chmod() Function


PHP Filesystem Reference Complete PHP Filesystem Reference

Definition and Usage

The chmod() function changes permissions of the specified file.

Returns TRUE on success and FALSE on failure.

Syntax

chmod(file,mode)

Parameter Description
file Required. Specifies the file to check
mode Required. Specifies the new permissions.

The mode parameter consists of four numbers:

  • The first number is always zero
  • The second number specifies permissions for the owner
  • The third number specifies permissions for the owner's user group
  • The fourth number specifies permissions for everybody else

Possible values (to set multiple permissions, add up the following numbers):

  • 1 = execute permissions
  • 2 = write permissions
  • 4 = read permissions


Example

<?php
// Read and write for owner, nothing for everybody else
chmod("test.txt",0600);

// Read and write for owner, read for everybody else
chmod("test.txt",0644);

// Everything for owner, read and execute for everybody else
chmod("test.txt",0755);

// Everything for owner, read for owner's group
chmod("test.txt",0740);
?>


PHP Filesystem Reference Complete PHP Filesystem Reference

Your suggestion:

Close [X]

Thank You For Helping Us!

Your message has been sent to W3Schools.

Close [X]
Search w3schools.com:

WEB BUILDING

Download XML Editor FREE Website BUILDER Free HTML5 Templates

SHARE THIS PAGE

facebook