PHP operation mysql database introductory tutorial series

This article uses 6 articles to introduce in detail how to operate the MySQL database with PHP. Welcome to learn!

1.MySQL entry, installation and client management tools

As the application scale expands and the complexity increases, the data Storage and retrieval are a big problem. For example, for a blog system, how to store articles? For social media systems, how are user relationships and dynamics stored? For an e-commerce system, how to store product and transaction information? And storage alone is not enough, data must be dynamically queried, updated and deleted very conveniently.

2.Basic use of MySQL (Part 1): DDL and DML statements

In the previous tutorial, we introduced the installation of MySQL and how to install it on the client Connect and manage the MySQL database through the terminal. Today we will briefly review the commonly used SQL statements in daily life, using phpMyAdmin as a GUI tool as an example for demonstration.

3.Basic usage of MySQL (Part 2): DCL statements and aggregate functions

DCL is relatively simple and is mainly used to grant or revoke access to the database permissions, as well as commit and rollback of database transactions.

4.Interact with MySQL database through PHP Mysqli extension

You can interact with MySQL through commands on the command line, and you can use the client software through The graphical interface interacts with MySQL, so how to establish connection and interaction with MySQL in the PHP program? In fact, we can regard the PHP application as the client of the MySQL server, and then interact with the MySQL server through the API provided by the encapsulated PHP extension package, just like we do in the command line and client software , but now this interaction is changed from manual operation to completed by writing corresponding PHP code.

5.Interacting with MySQL database through PDO extension (Part 1): Basic usage

In the previous tutorial, I introduced you how to Interact with MySQL database through PHP's built-in Mysqli extension. Today we will take a look at another PHP built-in database extension - PDO, whose full name is PHP Data Objects, that is, PHP data objects.

6.Interaction with MySQL database through PDO extension (Part 2): Add, delete, modify, query implementation and database transactions

Why use prepared statements? Add, delete, modify, check? We have briefly introduced prepared statements in the previous tutorial. We can compare them with view templates. The so-called prepared statements are predefined SQL statement templates, in which specific parameter values ​​are replaced by placeholders.

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