What should I do if the database service cannot be connected when PHP connects to MAMP?

1. Introduction to the problem

When using MAMP as a server to develop a PHP database application, the database service cannot be connected. Even using Navicat, the following error occurs

2. Solution

2.1 Navicat connection problem

In Navicat's connection properties, go to Advanced, check "Use socket file", and change /Applications/ MAMP/tmp/mysql/mysql.sock Copy it in

##2.2 Solve the failure problem of PHP connecting to MySql in MAMP

Execute in the terminal

sudo ln -s /Applications/MAMP/tmp/mysql/mysql.sock /var/mysql/mysql.sock

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