How to Fix the 'Call to undefined function sqlsrv_connect()' Error in PHP?

Fatal Error Resolved: Understanding sqlsrv_connect() Function for Connecting to Microsoft SQL Server

In your quest to create a database-connected web app, you faced the stumbling block of the "Call to undefined function sqlsrv_connect()" error. This error arises due to the unavailability of the MSSQL extension for Windows PHP versions 5.3 and above.

To resolve this issue, you need to install SQLSRV, a driver provided by Microsoft as an alternative to MSSQL. Follow these steps meticulously:

1. Download the SQLSRV32.EXE file from Microsoft's official download page.
2. Select the destination path as "C:xamppphpext".
3. Find the line "extension = php_sqlsrv_56_ts.dll" in your php.ini file and uncomment it, or append it if it's not there.
4. Restart the Apache web server from the XAMPP Control Panel.

Once you complete these steps, the error should be resolved, and you will be able to successfully connect to your Microsoft SQL Server database and perform the desired operations (SELECT, INSERT, UPDATE, and DELETE).

Remember to ensure that you have all the necessary PHP prerequisites, such as the PHP Data Objects (PDO) extension, enabled in your PHP configuration.

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