(PHP 4, PHP 5, PHP 7)
imap_headerinfo — Read the header of the message
$imap_stream
, int $msg_number
[, int $fromlength
= 0
[, int $subjectlength
= 0
[, string $defaulthost
= NULL
]]] )Gets information about the given message number by reading its headers.
imap_stream
由 imap_open() 返回的 IMAP 流。
msg_number
The message number
fromlength
Number of characters for the fetchfrom property. Must be greater than or equal to zero.
subjectlength
Number of characters for the fetchsubject property Must be greater than or equal to zero.
defaulthost
Returns the information in an object with following properties:
fromlength
characters
subjectlength
characters