PHP and SQL are different technologies that are used for different purposes. PHP is a programming language that is commonly used for developing web applications. SQL is a database language that is used for managing and querying data stored in relational databases.

PHP is often used in conjunction with SQL to build web applications that interact with a database. PHP can be used to execute SQL queries, retrieve and process the results, and generate dynamic web pages based on the data.

In terms of which is better, it really depends on the specific requirements and goals of your project. Both PHP and SQL are powerful tools that have their own unique capabilities and strengths. If you need to build a web application that requires extensive interaction with a database, then using PHP in conjunction with SQL may be the best choice. However, if your project does not require a database or only needs limited interaction with a database, then PHP alone may be sufficient. Ultimately, the right choice will depend on your specific needs and goals.