sabre：遍历电话属性无法提供预期的结果

Question

一个可能很简单的问题-但我很傻：

在sabre/vobject usage instruction之后，我将循环TEL-property以获取数字及其类型。

BEGIN:VCARD
TEL;TYPE=HOME,PREF:+15551234560
TEL;TYPE=HOME,FAX:+15551234569
TEL;TYPE=WORK:+155523456789
END:VCARD

foreach ($vCard->TEL as $number) {
    echo (string)$number . ': ' . $vCard->TEL['TYPE'] . PHP_EOL;
}

代替

+15551234560: HOME,PREF
+15551234569: HOME,FAX
+155523456789: WORK

我收到：

+15551234560: HOME,PREF
+15551234569: HOME,PREF
+155523456789: HOME,PREF

Answer 1

我找到的解决方法是：

foreach ($vCard->TEL as $key => $number) {
    echo (string)$number . ': ' . $vCard->TEL[$key]->parameters['TYPE'] . PHP_EOL;
}

Answer 2

foreach ($vCard->TEL as $number) {
    echo (string)$number . ': ' . $number['TYPE'] . PHP_EOL;
}