Foreach 无法在简单 XML 中正常工作

不知道为什么，但邮件一直告诉我那里没有电子邮件，我知道我只是错误地访问了它

XML文件：`

<?xml version="1.0" encoding="UTF-8"?>
<schools>
    <schoolData>
        <name>Dude</name>
        <schoolName>NA</schoolName>
        <email>sls@gmail.com</email>
        <mascot>Da bears</mascot>
    </schoolData>
    <schoolData>
        <name>Dude2</name>
        <schoolName>gg</schoolName>
        <email>sl3@gmail.com</email>
        <mascot>Muffin</mascot>
    </schoolData>
    <schoolData>
        <name>Dude3</name>
        <schoolName>123</schoolName>
        <email>s1@gmail.com</email>
        <mascot>cheesecakeface</mascot>
    </schoolData>
    <schoolData>
        <name>Dude234</name>
        <schoolName>456</schoolName>
        <email>1@gmail.com</email>
        <mascot>Bob</mascot>
    </schoolData>
</schools>

'

    <?php
$XML = simplexml_load_file('http://domain/hMail/data/list.xml');
foreach ($XML as $school) {
    $mail->AltBody = 'Come see me play Tonight!';
    $mail->msgHTML(file_get_contents('contents.html'), dirname(__FILE__));
    $mail->addAddress($school->schoolData->email);
}

'

'我也尝试过$XML->学校数据/$school->电子邮件