How can PHP beginners ensure secure file uploads by implementing file renaming techniques?

To ensure secure file uploads in PHP, beginners can implement file renaming techniques to prevent malicious users from uploading harmful files with executable extensions. By renaming the uploaded file to a unique name or appending a timestamp, we can avoid conflicts and make it harder for attackers to predict the file's location. 

// Get the uploaded file name and extension
$originalFileName = $_FILES['file']['name'];
$fileExtension = pathinfo($originalFileName, PATHINFO_EXTENSION);

// Generate a unique file name
$uniqueFileName = uniqid() . '.' . $fileExtension;

// Move the uploaded file to a secure directory with the new name
move_uploaded_file($_FILES['file']['tmp_name'], 'uploads/' . $uniqueFileName);

Keywords

PHP file uploads secure file renaming techniques

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