PHP site prompts "/var/lib/mysql. sock" does not exist solution-php Tutorial

The PHP site prompts that "varlibmysqlmysql. sock" does not exist.

[Mysql] [Client] Socket =/tmp/mysql. sock # Write the correct position of mysql. sock here, usually either under/tmp/or under/var/lib/mysql/ 2. modify the connection mode: specify an IP address and connect to mysql using tcp instead of local sock. # Mysql-h127.0.0.1-uuser-ppassword 3. add a link to mysql. sock. for example, if the actual mysql. sock is under/tmp/, type the following command: # Ln-s/tmp/mysql. sock/var/lib/mysql. sock Any of the above three solutions can solve the problem. after the solution is completed, restart php, nginx (or apache.