With PHP, we can connect to and manipulate databases. MySQL is the most popular database system used with PHP. This is one of the most popular relational database systems. Originally an open-source solution, MySQL now is owned by Oracle Corporation. Today, MySQL is a pillar of LAMP application software. That means it’s a part of Linux, Apache, MySQL, and Perl/PHP/Python stack. Having C and C++ under the hood, MySQL works well with such system platforms as Windows, Linux, macOS, IRIX, and others.