What are best practices for setting file permissions in PHP when creating upload scripts?

When creating upload scripts in PHP, it is important to set appropriate file permissions to ensure security. A common best practice is to set the permissions to restrict access to only the necessary users (e.g., owner and group) and to prevent unauthorized access to the uploaded files. This can help prevent potential security vulnerabilities and protect sensitive data. 

// Set file permissions for uploaded files
$uploadDir = '/path/to/upload/directory/';
$uploadedFile = $uploadDir . basename($_FILES['file']['name']);

// Set permissions to 0644 for files and 0755 for directories
if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadedFile)) {
    chmod($uploadedFile, 0644);
    echo 'File uploaded successfully.';
} else {
    echo 'Error uploading file.';
}

Keywords

file permissions PHP upload scripts security chmod

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