For the PHP directives there are system values set by default. You can get information about them by calling the phpinfo() function.
You need to create a file with a .php extension such as sdhrd.php in a directory, accessible through web. Then write the following lines in it:
<?php phpinfo(); ?>
Open the newly created file in your browser.
Depending on where you have located it in your hosting account, write down the full web address to the file.
For example, if it is located in the public_html/dir/ directory, you should access: