unlink() deletes a name from the filesystem. If that name was the last link to a file and no processes have the file open, the file is deleted and the space it was using is made available for reuse.

Does unlink delete files?

The unlink function deletes the file name filename . If this is a file’s sole name, the file itself is also deleted. (Actually, if any process has the file open when this happens, deletion is postponed until all processes have closed the file.)

What is unlink function?

Unlink() function: The unlink() function is an inbuilt function in PHP which is used to delete a file. The filename of the file which has to be deleted is sent as a parameter and the function returns True on success and False on failure. The unlink() function in PHP accepts two-parameter.