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mysql_query中第二个参数是什么意思
What does the second parameter of mysql_query mean-PHP Chinese website Q&A-What does the second parameter of mysql_query mean-PHP Chinese website Q&A
Look around and learn.
数据库连接，用于告诉mysql_query函数使用哪个mysql连接执行sql语句。
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
What does the second parameter of mysql_query mean-PHP Chinese website Q&A-What does the second parameter of mysql_query mean-PHP Chinese website Q&A
Look around and learn.
数据库连接，用于告诉mysql_query函数使用哪个mysql连接执行sql语句。