Why Am I Getting the 'Call to Undefined Function mysql_connect()' Error in PHP and How Can I Fix It?

Unresolved Fatal Error: "Call to Undefined Function mysql_connect()": Exploring Causes and Alternatives

When attempting to establish a database connection using XAMPP and MySQL server, developers often encounter the perplexing error: "Fatal error: Uncaught Error: Call to undefined function mysql_connect()." This error can be particularly frustrating, preventing the completion of essential database operations.

To unravel the mystery behind this error, it's essential to consider the underlying cause. With the advent of PHP 7, PHP's mysql_* functions were deprecated, meaning they are no longer supported in favor of more modern and secure alternatives like MySQLi and PDO.

As XAMPP typically utilizes PHP 7, the attempt to use mysql_connect() results in the undefined function error. To rectify this issue, developers have two viable options:

1. MySQLi (MySQL Improved Extension): MySQLi provides a more robust and flexible interface for MySQL connectivity in PHP. It offers an object-oriented API, making it easier to execute queries and handle results.
2. PDO (PHP Data Objects): PDO is a database abstraction layer that offers a unified API for interacting with various database systems, including MySQL. It promotes code portability and reduces the need for database-specific code.

Once the appropriate alternative is selected, developers can modify their code to connect to the database seamlessly. By embracing the recommended practices and staying abreast of PHP's evolving landscape, programmers can avoid similar errors and ensure a secure and efficient database connectivity.

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