php - How to read ip address of the incoming emails -

php - How to read ip address of the incoming emails -

i have set continuous project class available online students , parents can interact with. inquire students email project progress everyday. utilize imap info , display online.

i understand email addresses can spoofed. how can find out if mail service did come yahoo, gmail or hotmail. imap function use. tried this

imap_headerinfo($inbox, $emails[$x])

but not give me ip address of servers passed through.

i appreciate help.

$mailinfo = imap_headerinfo($inbox, $emails[$x]); print_r($mailinfo->from);

should give you: personal, adl, mailbox, , host

any of next should help $mailinfo->...: (for total reference, check http://php.net/manual/en/function.imap-headerinfo.php)

->to - array of objects to: line, next properties: personal, adl, mailbox, , host

->from - array of objects from: line, next properties: personal, adl, mailbox, , host

->ccaddress - total cc: line, 1024 characters

->cc - array of objects cc: line, next properties: personal, adl, mailbox, , host

->bccaddress - total bcc: line, 1024 characters

->bcc - array of objects bcc: line, next properties: personal, adl, mailbox, , host

->reply_toaddress - total reply-to: line, 1024 characters

->reply_to - array of objects reply-to: line, next properties: personal, adl, mailbox, , host

->senderaddress - total sender: line, 1024 characters

->sender - array of objects sender: line, next properties: personal, adl, mailbox, , host

->return_pathaddress - total return-path: line, 1024 characters

->return_path - array of objects return-path: line, next properties: personal, adl, mailbox, , host

why hostname important:

(sorry shaky image, sitting on train)

php cakephp imap