   #PHP Manual Filesystem functions chgrp chown

   PHP Manual
   Prev  Next
   ______________________________________________________________________

                                     chmod

   (PHP 3, PHP 4 )
   chmod -- Changes file mode

Description

   bool chmod ( string filename, int mode)

   Attempts to change the mode of the file specified by filename to that
   given in mode.

   Note that mode is not automatically assumed to be an octal value, so
   strings (such as "g+w") will not work properly. To ensure the expected
   operation, you need to prefix mode with a zero (0):

   <?php
   chmod("/somedir/somefile", 755);   // decimal; probably incorrect
   chmod("/somedir/somefile", "u+rwx,go+rx"); // string; incorrect
   chmod("/somedir/somefile", 0755);  // octal; correct value of mode
   ?>

   The mode parameter consists of three octal number components
   specifying access restrictions for the owner, the user group in which
   the owner is in, and to everybody else in this order. One component
   can be computed by adding up the needed permissions for that target
   user base. Number 1 means that you grant execute rights, number 2
   means that you make the file writeable, number 4 means that you make
   the file readable. Add up these numbers to specify needed rights. You
   can also read more about modes on Unix systems with 'man 1 chmod' and
   'man 2 chmod'.

   <?php
   // Read and write for owner, nothing for everybody else
   chmod("/somedir/somefile", 0600);
   // Read and write for owner, read for everybody else
   chmod("/somedir/somefile", 0644);
   // Everything for owner, read and execute for others
   chmod("/somedir/somefile", 0755);
   // Everything for owner, read and execute for owner's group
   chmod("/somedir/somefile", 0750);
   ?>

   Returns TRUE on success or FALSE on failure.

     Note: The current user is the user under which PHP runs. It is
     probably not the same user you use for normal shell or FTP access.

     Note: This function will not work on remote files as the file to be
     examined must be accessible via the servers filesystem.

   See also chown() and chgrp().
   ______________________________________________________________________

   Prev  Home  Next
   chgrp  Up  chown
