无法使用php IMAP从Gmail获取收件箱

你好伙计们我试图使用php imap来获取邮箱消息，但我得到Network is unreachable错误

这是我的代码

<h1>Gmail Email Inbox using PHP with IMAP</h1>
<?php
    if (! function_exists('imap_open')) {
        echo "IMAP is not configured.";
        exit();
    } else {
        ?>
<div id="listData" class="list-form-container">
    <?php
        
        /* Connecting Gmail server with IMAP */
        $connection = imap_open('{imap.gmail.com:993/imap/ssl}INBOX', 'My correct email address here', 'My correct password here') or die('Cannot connect to Gmail: ' . imap_last_error());
        
        /* Search Emails having the specified keyword in the email subject */
        $emailData = imap_search($connection, 'SUBJECT "Article "');
        
        if (! empty($emailData)) {
            ?>
    <table>
        <?php
            foreach ($emailData as $emailIdent) {
                
                $overview = imap_fetch_overview($connection, $emailIdent, 0);
                $message = imap_fetchbody($connection, $emailIdent, '1.1');
                $messageExcerpt = substr($message, 0, 150);
                $partialMessage = trim(quoted_printable_decode($messageExcerpt)); 
                $date = date("d F, Y", strtotime($overview[0]->date));
                ?>
        <tr>
            <td><span class="column">
                    <?php echo $overview[0]->from; ?>
            </span></td>
            <td class="content-div"><span class="column">
                    <?php echo $overview[0]->subject; ?> - <?php echo $partialMessage; ?>
            </span><span class="date">
                    <?php echo $date; ?>
            </span></td>
        </tr>
        <?php
            } // End foreach
            ?>
    </table>
    <?php
        } // end if
        
        imap_close($connection);
    }
    ?>
</div>

我应该从我的gmail帐户中获取邮箱，并将其显示在html中，如上面的代码所示. 让我们展示一些爱.