What are some key considerations when planning the structure of a PHP image gallery, such as user input, database structure, and functionality?

When planning the structure of a PHP image gallery, key considerations include handling user input securely to prevent SQL injection attacks, designing an efficient database structure to store image data, and implementing functionality such as image uploads, viewing, and categorization. 

// Example of handling user input securely to prevent SQL injection
$user_input = $_POST['user_input'];
$safe_input = mysqli_real_escape_string($connection, $user_input);
$query = "SELECT * FROM images WHERE title = '$safe_input'";
$result = mysqli_query($connection, $query);
```

```php
// Example of designing a database structure for an image gallery
CREATE TABLE images (
    id INT AUTO_INCREMENT PRIMARY KEY,
    title VARCHAR(255) NOT NULL,
    description TEXT,
    file_name VARCHAR(255) NOT NULL,
    category_id INT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
```

```php
// Example of implementing image upload functionality
if(isset($_FILES['image'])){
    $file_name = $_FILES['image']['name'];
    $file_tmp = $_FILES['image']['tmp_name'];
    move_uploaded_file($file_tmp, "uploads/".$file_name);
    $query = "INSERT INTO images (title, file_name) VALUES ('$title', '$file_name')";
    mysqli_query($connection, $query);
}

Keywords

user input validation database normalization image processing libraries pagination session management

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