使用PHP从xml中提取多个标记

这是我的address.xml

<?xml version="1.0" ?>
<!--Sample XML document -->
<AddressBook>
    <Addressentry>
        <firstName>jack</firstName>
        <lastName>S</lastName>
        <Address>2899,Ray Road</Address>
        <Email>jkjsvsdka@ghu.edu</Email>
    </Addressentry>
    <Addressentry>
        <firstName>Sid</firstName>
        <lastName>K</lastName>
        <Address>238,Baseline Road,TX</Address>
        <Email>sk@ghu.edu</Email>
        <Email>sk@gmail.com</Email>
    </Addressentry>
    <Addressentry>
        <firstName>Satya</firstName>
        <lastName>Yar</lastName>
        <Address>6,Rural Road,Tempe,AZ</Address>
        <Email>syarlag@ghu.edu</Email>
       <Email>ssya@gmail.com</Email>
        <Email>satag@yahoo.com</Email>
    </Addressentry>

</AddressBook>

杰克

雷道2899号
jkjsvsdka@ghu.edu
希德
K
德克萨斯州基线路238号
sk@ghu.edu
sk@gmail.com
萨提亚
亚尔
亚利桑那州坦佩市乡村路6号
syarlag@ghu.edu
ssya@gmail.com
satag@yahoo.com

我正在尝试使用PHP代码加载所有条目，如下所示。每个addressentry可以有一个或多个标记。现在从下面的代码中，我只能提取一个标记。我的问题是如何提取与特定Addressentry关联的所有标记。也就是说，我想在同一行打印所有电子邮件

<?php
$theData = simplexml_load_File("address.xml");

foreach($theData->Addressentry as $theAddress) {
    $theFirstName = $theAddress->firstName;
    $theLastName = $theAddress->lastName;
    $theAdd = $theAddress->Address;


    echo "<p>".$theFirstName."
    ".$theLastName."<br/>
    ".$theAdd."<br/>
    ".$theAddress->Email."<br/>
    </p>";


    unset($theFirstName);
    unset($theLastName);
    unset($theAdd);
    unset($theEmail);
}
?>

任何帮助都将不胜感激

$emails=array（）；
$emails = array();
foreach ($theAddress->Email as $email) {
    $emails[] = $email;
}
echo "<p>".$theFirstName."
    ".$theLastName."<br/>
    ".$theAdd."<br/>
    ".implode(', ', $emails)."<br/>
    </p>";

foreach（$theAddress->Email as$Email）{
$email[]=$email；
}
echo“”$theFirstName
“$theLastName。”

“$theAdd。”

“.内爆（'，'，$emails）。”

”；