What are some recommended methods for debugging and troubleshooting PHP functions that interact with database queries?

When debugging PHP functions that interact with database queries, it is important to use error handling techniques such as try-catch blocks and error reporting to catch and display any errors that occur during the query execution. Additionally, using functions like mysqli_error() or PDO::errorInfo() can help provide more detailed information about any database-related errors that may occur. 

// Example of using try-catch block and error reporting for debugging database queries
try {
    // Your database connection code here

    // Your database query code here

} catch (PDOException $e) {
    echo "Error: " . $e->getMessage();
}

Keywords

MySQL PDO SQL injection error handling query optimization

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