read_gmail.php

<?php
// read_gmail.php
set_time_limit(4000);

// Connect to gmail
$url = '{imap.gmail.com:993/imap/ssl}INBOX';
$user = 'username_gmail_anda@gmail.com';
$pass = 'isi_dengan_password_anda';

// try to connect
$inbox = imap_open($url, $user, $pass) or die('Error When Connect: ' . imap_last_error());

// get unseen (unread) emails
$mails = imap_search($inbox,'UNSEEN');
$i = 1;

foreach($mails as $mail) {
    // email header
    $header = imap_headerinfo($inbox, $mail);
    // email body
    $body = imap_body($inbox, $mail);

    echo $i . '.&nbsp;';
    echo $header->fromaddress . '&nbsp;';
    echo $header->subject . '&nbsp;';
    echo $body;
    echo '<br/>';
    $i++;
    
    // mark as seen
    imap_setflag_full($inbox, $mail, '\\Seen \\Flagged');
}

// Disconnect from gmail
imap_expunge($inbox);
imap_close($inbox);