What to do if the php port link fails

Solution to PHP port link failure: 1. Open the cmd window; 2. Enter the "mysql -u root -p" command; 3. Check the local database port through "show global variables like 'port';" No.; 4. Go back to the database configuration of the PHP code and change the port number to the correct port number.

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, Dell G3 computer.

What should I do if the php port link fails? Solve the port exception when PHP accesses the database

After turning on the computer, press and hold the [Start] and [R] keys on the computer keyboard at the same time to open the computer program running pop-up window.

In the program running pop-up window that pops up in the lower left corner of the computer, enter the letters [cmd], and then click the [OK] button.

In the pop-up running interface, enter [mysql -u root -p]. At this time, the command line belonging to the password will appear. Just enter the password for your database.

After the database connection is successful, enter [show global variables like 'port';]. Be sure not to forget to enter the final semicolon.

In the displayed Mysql information, you can see the port value, which is the port number of the local database. , usually 3306.

After knowing the local database port number, go back to the database configuration of the php code and change the port number to the correct port number, so that no database port exception will be reported. Error.

Recommended study: "PHP Video Tutorial"

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