(PHP 4, PHP 5, PHP 7)
imap_close — Close an IMAP stream
imap_close ( resource $imap_stream [, int $flag = 0 ] ) : bool
Closes the imap stream.
imap_stream
An IMAP stream returned by imap_open().
flag
If set to CL_EXPUNGE, the function will silently expunge the mailbox before closing, removing all messages marked for deletion. You can achieve the same thing by using imap_expunge()
Returns true on success or false on failure.
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https://www.php.net/manual/en/function.imap-close.php