PHP | umask() Function

PHP umask() Function


Hello dear readers! welcome back to another edition of our tutorial on PHP. In this tutorial guide, we are going to be discussing about the PHP umask() Function.

The built-in PHP umask() function changes the file permission for files. This PHP function sets the PHP's umask to mask & 0777 and returns the old umask. But if we call the umask() function without any arguments, it returns the current umask.

Syntax

Following below is the syntax to use this function -

int umask ([ int $mask ] )


This built-in PHP function can set the PHP's umask to mask & 0777 and returns old umask. When PHP is being used as server module, the umask is restored when each request is finished.

Return Value

The PHP umask() function without arguments returns current mask. Else, an old umask is returned.

Example

Try out the below example -

<?php
   $old = umask(0);
   chmod("PhpProject/php/sample.txt", 0755);
   umask($old);

   //  Checking
   if($old != umask()) {
      echo "An error occurred while changing back the umask";
   }
?>


Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial guide, we are going to be discussing about the PHP unlink() Function.

Do feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

Follow us on our various social media platforms to stay updated with our latest tutorials. You can also subscribe to our newsletter in order to get our tutorials delivered directly to your emails.

Thanks for reading and bye for now.