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PHP та MySQL: Написання чистого та підтримуваного коду

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PHP та MySQL: Написання чистого та підтримуваного коду image

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How can using prepared statements in PHP enhance the security of your MySQL queries?

Prepared statements prevent SQL injection attacks by separating the SQL query logic from the user input, making it impossible for malicious code to be inserted into your queries.

What is the importance of sanitizing user input when working with PHP and MySQL?

Sanitizing user input helps prevent unexpected data from breaking your code or being exploited for malicious purposes, ensuring the integrity and security of your database operations.

How can you establish a connection to a MySQL database using PHP?

You can use the mysqli extension or PDO (PHP Data Objects) to connect to a MySQL database in PHP. Both methods provide secure and efficient ways to interact with your database.

Why is it recommended to use functions like `mysqli_real_escape_string()` when handling user input for SQL queries?

Using functions like `mysqli_real_escape_string()` helps escape special characters in user input, preventing them from being interpreted as part of the SQL query and avoiding potential injection vulnerabilities.

What are best practices for organizing and structuring your PHP code when working with MySQL databases?

It’s recommended to separate your database logic into distinct files or classes, use meaningful variable names, follow consistent coding conventions, and document your code for better maintainability.

How can you handle SQL errors effectively in your PHP application?

You can use try-catch blocks or error handling functions in PHP to capture and handle SQL errors gracefully, allowing you to troubleshoot and resolve issues efficiently without exposing sensitive information to users.

Why should you regularly backup your MySQL database when developing PHP applications?

Regularly backing up your MySQL database helps protect your data from accidental loss, corruption, or unauthorized access, ensuring you can restore your information in case of emergencies.

What are some common performance optimization techniques for PHP and MySQL applications?

You can optimize your PHP and MySQL applications by using indexes on frequently queried columns, limiting the data returned by SELECT queries, caching data where possible, and avoiding unnecessary database calls.

How can you ensure your PHP and MySQL applications comply with data protection regulations, such as GDPR?

To comply with data protection regulations like GDPR, you should implement data encryption, secure user authentication, data anonymization techniques, and obtain user consent for data processing where required.

Why should you avoid storing sensitive information, such as passwords, in plain text in your MySQL database?

Storing sensitive information in plain text makes it vulnerable to unauthorized access and compromises the security of your application and users’ data. Instead, you should hash passwords and use secure encryption methods for data protection.
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Розробка бекенда з PHP Вступ до баз даних та MySQL
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