The mysql_connect() function is a deprecated function in PHP. This means that it is no longer recommended for use and will be removed from future versions of PHP.
The mysql_connect() function is used to connect to a MySQL database. However, it is not as secure or reliable as the newer mysqli_connect() and PDO functions.
If you are still using the mysql_connect() function, you should update your code to use mysqli_connect() or PDO instead.
To update your code to use mysqli_connect(), simply replace the mysql_connect() function with the mysqli_connect() function. The mysqli_connect() function takes the same arguments as the mysql_connect() function.
To update your code to use PDO, you will need to create a new PDO object. You can do this by calling the PDO constructor. The PDO constructor takes two arguments: the database driver and the database connection string.
Once you have created a PDO object, you can use it to connect to your MySQL database by calling the PDO::connect() method.
Here is an example of how to update your code to use mysqli_connect():
// Old code using mysql_connect()
$db = mysql_connect('localhost', 'username', 'password');
// New code using mysqli_connect()
$db = mysqli_connect('localhost', 'username', 'password');
Here is an example of how to update your code to use PDO:
// New code using PDO
$db = new PDO('mysql:host=localhost;dbname=database', 'username', 'password');
If you are not sure how to update your code to use mysqli_connect() or PDO, you can consult the PHP documentation.
It is important to note that the mysql_connect() function will be removed from future versions of PHP. Therefore, it is important to update your code to use mysqli_connect() or PDO instead.
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