(PHP 3, PHP 4 )
imap_scanmailbox -- Read the list of mailboxes, takes a string to search for in the text of the mailboxReturns an array containing the names of the mailboxes that have content in the text of the mailbox. This function is similar to imap_listmailbox(), but it will additionally check for the presence of the string content inside the mailbox data. See imap_getmailboxes() for a description of ref and pattern.