Why Does `mysqli_select_db()` Give a 'Warning: mysqli_select_db() expects exactly 2 parameters, 1 given' Error?

mysqli_select_db() Function Parameter Error

The mysqli_select_db() function is used to select a specific database within a MySQL server connection. However, when providing insufficient parameters to this function, you may encounter a warning message: "Warning: mysqli_select_db() expects exactly 2 parameters, 1 given."

To resolve this error, ensure that you provide the correct number of parameters to the mysqli_select_db() function. As the error message suggests, this function expects exactly two parameters:

• $link: The connection resource (link) established using mysqli_connect()
• $dbname: The name of the database you wish to select

In your provided code snippet, you have only provided one parameter: the database name. To fix the error, you need to pass both the connection link and the database name as follows:

mysqli_select_db($con, 'phpcadet');

By providing the correct parameters, you will establish a connection to the desired database and prevent the "expects exactly 2 parameters" error.

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