PHP/File Directory/chmod

Changing file permissions

   <source lang="html4strict">

<?php chmod("/home/user/secrets.txt",0400); ?>

 </source>
   
  

Changing File Permissions and Ownership

   <source lang="html4strict">

<?

   chmod("/var/www/myfile.txt", 0777);
   chmod("/var/www/myfile.txt", 0755);
   if (chown("myfile.txt", "sally")) {
           print "File owner changed.\n";
   } else {
           print "File ownership change failed!\n";
   }

?>

 </source>
   
  

chmod() function changes the mode of filename to permissions.

   <source lang="html4strict">

Its syntax is: int chmod (string filename, int permissions) The permissions must be specified in octal mode. <?

   chmod ("data.txt", 0766); // This will work

?>

 </source>
   
  

Using the chmod() Function

   <source lang="html4strict">

<?php

    $fr = @fopen("data.txt", "w");
    if(!$fr) {
         chmod("data.txt", 0722);
         $fr = @fopen("data.txt", "w");
         if(!$fr) {
         echo "Error: Couldn"t open data.txt (chmod attempted)";
              exit;
         }
    }
    fputs($fr, "Write Successful!");
    fclose($fr);

?>

 </source>