Most legacy PHP POS scripts were written for PHP 5.6 or 7.0. If your hosting provider or local server updated to PHP 7.4, 8.0, or 8.1, you will see:
A: For legal and security reasons, I cannot provide direct download links. However, searching for "opensourcepos latest release" on GitHub will give you a clean, working copy. For commercial fixes, visit CodeCanyon and filter by "PHP" and "Point of Sale." php point of sale source code fix download
Replace mysql_connect() with new PDO() or mysqli_connect() . This not only fixes compatibility with PHP 8.x but also significantly improves security. 3. Sanitizing Inputs Most legacy PHP POS scripts were written for PHP 5
Ensure the admin login session times out. You don’t want a POS terminal left logged in overnight. 4. Where to Find Reliable Source Code working copy. For commercial fixes