Are there any potential pitfalls to be aware of when working with graphics in PHP?

One potential pitfall when working with graphics in PHP is not properly sanitizing user input, which can leave your application vulnerable to security risks such as SQL injection or cross-site scripting attacks. To mitigate this risk, always validate and sanitize user input before using it to manipulate graphics. 

// Example of validating and sanitizing user input
$user_input = $_POST['user_input'];

// Validate user input
if (!filter_var($user_input, FILTER_VALIDATE_INT)) {
    die("Invalid input");
}

// Sanitize user input
$sanitized_input = htmlspecialchars($user_input);

// Now you can safely use $sanitized_input to manipulate graphics

Keywords

GD library image processing memory management file formats security vulnerabilities

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