What are some common mistakes that developers make when working with image files in PHP?

One common mistake developers make when working with image files in PHP is not checking the file type before processing it. This can lead to security vulnerabilities if malicious files are uploaded to the server. To solve this issue, always validate the file type before allowing any image processing operations. 

// Check file type before processing image
$allowedTypes = ['image/jpeg', 'image/png', 'image/gif'];

if (!in_array($_FILES['image']['type'], $allowedTypes)) {
    die('Invalid file type. Only JPEG, PNG, and GIF files are allowed.');
}

// Continue with image processing operations

Keywords

image files PHP common mistakes developers error types

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