用PHP接收电子邮件

以下是从imap服务器接收邮件的PHP方法。

#! /usr/bin/php
<?php
// --------------------------------------------------------------------
/*

    imap_get.php

                    Nov/26/2017


*/
// --------------------------------------------------------------------
fputs (STDERR,"*** 開始 ***\n");

$server = 'imap.mail.yahoo.co.jp';
$port = 993;
$user = 'xxxxxxx';
$password = 'yyyyyy';

$mailBox = imap_open('{' . $server . ':' . $port . '/novalidate-cert/imap/ssl}' . "INBOX", $user, $password);
if (!$mailBox) {
    echo "接続失敗\n";
}

$messageIds = imap_search($mailBox, 'ALL');

print_r($messageIds);

foreach($messageIds as $messageId) {
    $header = imap_headerinfo($mailBox, $messageId);

    $subject = mb_decode_mimeheader($header->subject);

    echo "Subject: " . $subject . "\n";

    $body = imap_fetchbody($mailBox, $messageId, 1, FT_INTERNAL);
    $body = trim($body);

    echo "Body: " . $body . "\n";
}

fputs (STDERR,"*** 終了 ***\n");
// --------------------------------------------------------------------
?>

在Arch Linux上安装库的方法

sudo pacman -S php-imap

設定文件的注釋

（省略）
extension=imap
（省略）

在Ubuntu上安装库的方法

sudo apt install php-imap

我在以下环境中确认了操作。

$ uname -a
Linux iwata 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

$ php --version
PHP 7.4.3 (cli) (built: May 26 2020 12:24:22) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.3, Copyright (c), by Zend Technologies