If you want to see PHPinfo page for the server where your account is located, please login to your File Manager and create file phpinfo.php in your public_html folder.
You should add the following code to your newly created phpinfo.php file:
// Show all information, defaults to INFO_ALL
Afterward, please save and close the file. Then go to your_domain.com/phpinfo.php page and you will see all the PHP limitations! :)
You can also access your account's hPanel and select the PHP Info menu in the Advanced section.
There you will be able to find out the PHP limitations along with other relevant PHP information :)
NOTE: You can also click here and see what PHP memory limit is at Hostinger.