Deletes filename. Similar to the Unix C unlink() function. Επιστρέφει TRUE σε επιτυχία ή FALSE σε αποτυχία.
Σημείωση: As of PHP 5.0.0 unlink() can also be used with some URL wrappers. Refer to Παράρτημα J for a listing of which wrappers support unlink().
Σημείωση: The context parameter was added as of PHP 5.0.0.
See also rmdir() for removing directories.