In the context of the forum thread, what are some considerations for securely managing image files on a Linux server using PHP?

When managing image files on a Linux server using PHP, it is important to consider security measures to prevent unauthorized access or malicious uploads. One way to securely manage image files is to store them outside of the web root directory and use PHP to control access to them. 

<?php
// Define the directory to store image files
$imageDirectory = '/var/www/images/';

// Check if the request is to upload an image
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['image'])) {
    // Validate the image file
    $imageFile = $_FILES['image'];
    $imagePath = $imageDirectory . basename($imageFile['name']);

    // Move the uploaded image file to the secure directory
    if (move_uploaded_file($imageFile['tmp_name'], $imagePath)) {
        echo 'Image uploaded successfully.';
    } else {
        echo 'Failed to upload image.';
    }
}
?>

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