PHP: Is there a command that can delete the contents of a file without opening it?

Question

Is there any way to remove the contents of an file in php, do we have any php command that does that, I know unlink but I do not want to delete the file instead

Answer 1

ftruncate — Truncates a file to a given length

Example

$handle = fopen('/path/to/file', 'r+');
ftruncate($handle, 0);
fclose($handle);

But you have to open the file.