(PHP 4, PHP 5, PHP 7, PHP 8)
imap_subscribe — Subscribe to a mailbox
Subscribe to a new mailbox.
imapAn IMAP\Connection instance.
mailboxThe mailbox name, see imap_open() for more information
Passing untrusted data to this parameter is insecure, unless imap.enable_insecure_rsh is disabled.
   Returns true on success or false on failure.
  
| Version | Description | 
|---|---|
| 8.1.0 | The imapparameter expects an IMAP\Connection
  instance now; previously, a validimapresource was expected. |