What are the potential pitfalls of not using mysql_error() function in PHP scripts that interact with a MySQL database?

Not using the mysql_error() function in PHP scripts that interact with a MySQL database can lead to potential pitfalls such as not being able to properly handle and display error messages that occur during database operations. This can make debugging and troubleshooting database-related issues more difficult. To solve this issue, you should always check for errors after executing MySQL queries and use mysql_error() to retrieve and display any error messages that may occur.

// Execute a MySQL query
$result = mysql_query($query);

// Check for errors
if(!$result){
    // Display error message
    echo "Error: " . mysql_error();
}