PHP uses IP addresses to connect to the MySQL database

We usually use mysql_connect (& quot; localhost & quot;, & quot; usrname & quot;, & quot; password & quot;) for testing ;); to connect to the MySQL database, if we want to connect to the MySQL database through other hosts using IP addresses, you need to modify the MySQL configuration file etcmy. we usually use mysql_connect ("localhost", "usrname", "password") to connect to the MySQL database during the test, if we want to connect to the MySQL database through IP addresses of other hosts, we need to modify the MySQL configuration file/etc/mysql/my. cnf. Otherwise, the following error occurs: can t connect to mysql server on 111 skip-external-locking # Instead of skip-networking. The default is now to listen only on # localhost which is more compatible and is not less secure. # bind-address = 127.0.0.1 // This line needs to be commented out. you only need to comment out this line of bind-address and then restart mysql to connect to mysql through the IP address of other machines.