What role does the mysql_error() function play in identifying and resolving database connection problems in PHP scripts?

The mysql_error() function in PHP is used to retrieve the error message associated with the most recent MySQL operation. By including this function in your PHP script, you can easily identify and troubleshoot any database connection problems that may occur during execution. 

// Establish database connection
$connection = mysqli_connect("localhost", "username", "password", "database");

// Check connection
if (!$connection) {
    die("Connection failed: " . mysqli_connect_error());
}

Keywords

mysql_error() database connection PHP scripts resolving identifying

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