How can the unlink() function be used securely to prevent unauthorized file deletion?

To prevent unauthorized file deletion using the unlink() function, you can implement a permission check before executing the unlink() function. This can be done by verifying the user's credentials or permissions before allowing the file deletion to proceed. 

// Check user permissions before deleting the file
if($user->isAdmin()) {
    unlink('file_to_delete.txt');
    echo 'File deleted successfully.';
} else {
    echo 'Unauthorized to delete file.';
}

Keywords

unlink file deletion security authorization PHP

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