How to output mysql error in php

php method to output mysql errors: 1. Create a new php file; 2. Create three variables, namely database address variable, database account variable and database password variable; 3. Use the mysqli_connect function to connect to the database; 4. . Use the if statement to determine whether the database connection is successful. If not, use the mysqli_error() function to output the error message.

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

php How to output mysql error?

php mysql outputs the error message for connecting to the database

Create a new php file named test.php to explain how php mysql outputs the error message for connecting to the database.

In the test.php file, use the header() method to set the encoding format of the page to utf-8.

In the test.php file, create three variables, namely database address variable, database account variable, and database password variable.

In the test.php file, use the mysqli_connect function to connect to the database through the account number and password.

In the test.php file, use the if statement to determine whether the database connection is successful. If not, use the mysqli_error() function to output an error message. Otherwise, it will prompt "Database connection Success!"

#Open the test.php file in the browser to view the results.

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