Why is my PHP code throwing a 'Fatal error: Class 'MySQLi' not found' and how can I fix it?

How to Resolve "Fatal Error: Class 'MySQLi' Not Found"?

When attempting to utilize PHP code, you may encounter the error "Fatal error: Class 'MySQLi' not found." This typically occurs when the MySQLi extension, which provides support for connecting to and interacting with MySQL databases, is not enabled in your PHP environment. Here's how to resolve this issue:

Confirm PHP Configuration

To verify whether MySQLi is enabled, check your phpinfo() page. Navigate to the Extensions section and locate the MySQLi entry. If it's not listed, MySQLi is not installed or enabled.

Installing MySQLi

If MySQLi is not present, you need to install it. The exact method depends on your specific setup:

• Ubuntu/Debian: sudo apt-get install php5-mysqli
• CentOS/RHEL: sudo yum install php53u-mysqlnd
• Windows (using XAMPP): Open the XAMPP control panel, click on the "PHP" section, and enable the "mysqli" extension.

For PHP Version 5.2.5

You should be aware that PHP version 5.2.5 has reached its end of life and is no longer supported. It's strongly recommended that you upgrade to a more recent PHP version, such as 5.3 or higher, to ensure compatibility with the MySQLi extension.

Additional Considerations

• Ensure that your PHP configuration file (php.ini) has the correct settings for MySQLi. Look for the "extension=mysqli.so" line and uncomment it if necessary.
• Restart your web server to implement any changes made.

Once these steps are complete, you should be able to use the MySQLi class in your PHP code without encountering the "Fatal error: Class 'MySQLi' not found" issue.

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