I feel that one set of good tutorials is enough, but now there are many tutorials on the PHP Chinese website, which are complicated and messy.
As a novice, after reading several times, I am still talking about mysql_connect, which has been abandoned by php7, to connect to the database.
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When I started learning, I looked at my PHP version, gave up MySQL, and started learning MySQL.
I started learning the day before yesterday and had already learned to use mysqli to write user login and registration, and then suddenly discovered The user login system I wrote cannot prevent SQL injection. I learned PDO and then rewrote the user login system using pdo statements. I finished it this afternoon. Listen to me, isn’t PHP Chinese website good? There is a video!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
