Is it necessary to use mysql_error() after every mysql_query() in PHP?

It is not necessary to use mysql_error() after every mysql_query() in PHP. Instead, you can use error handling techniques such as try-catch blocks or checking the return value of mysql_query() for errors. This helps in improving the readability and maintainability of your code.

// Example of using try-catch block for error handling
try {
    $result = mysql_query($query);
    if(!$result) {
        throw new Exception(mysql_error());
    }
    // Continue processing the result
} catch (Exception $e) {
    echo "Error: " . $e->getMessage();
}