php simplexmlElement操作xml的命名空间实现代码

<feed xmlns=http://www.w3.org/2005/Atom xmlns:openSearch=http://a9.com/-/spec/opensearch/1.1/ xmlns:gContact=http://schemas.google.com/contact/2008 xmlns:batch=http://schemas.google.com/gdata/batch xmlns:gd=http://schemas.google.com/g/2005 gd:etag=W/"CUMBRHo_fip7ImA9WxRbGU0.">
<id>liz@gmail.com</id>
<updated>2008-12-10T10:04:15.446Z</updated>
<category scheme=http://schemas.google.com/g/2005#kind term=http://schemas.google.com/contact/2008#contact />
<title>Elizabeth Bennets Contacts</title>
<link rel=http://schemas.google.com/g/2005#feed type=application/atom+xml href=https://www.google.com/m8/feeds/contacts/liz%40gmail.com/full />
<link rel=http://schemas.google.com/g/2005#post type=application/atom+xml href=https://www.google.com/m8/feeds/contacts/liz%40gmail.com/full />
<link rel=http://schemas.google.com/g/2005#batch type=application/atom+xml href=https://www.google.com/m8/feeds/contacts/liz%40gmail.com/full/batch />
<link rel=self type=application/atom+xml href=https://www.google.com/m8/feeds/contacts/liz%40gmail.com/full?max-results=25 />
<author>
<name>Elizabeth Bennet</name>
<email>liz@gmail.com</email>
</author>
<generator version=1.0 uri=http://www.google.com/m8/feeds> Contacts </generator>
<openSearch:totalResults>1</openSearch:totalResults>
<openSearch:startIndex>1</openSearch:startIndex>
<openSearch:itemsPerPage>25</openSearch:itemsPerPage>
<entry gd:etag="Qn04eTVSLyp7ImA9WxRbGEUORAQ.">
<id> http://www.google.com/m8/feeds/contacts/liz%40gmail.com/base/c9012de </id>
<updated>2008-12-10T04:45:03.331Z</updated>
<app:edited xmlns:app=http://www.w3.org/2007/app>2008-12-10T04:45:03.331Z</app:edited>
<category scheme=http://schemas.google.com/g/2005#kind term=http://schemas.google.com/contact/2008#contact />
<title>Fitzwilliam Darcy</title>
<gd:name>
<gd:fullName>Fitzwilliam Darcy</gd:fullName>
</gd:name>
<link rel=http://schemas.google.com/contacts/2008/rel#photo type=image/* href=https://www.google.com/m8/feeds/photos/media/liz%40gmail.com/c9012de gd:etag="KTlcZWs1bCp7ImBBPV43VUV4LXEZCXERZAc." />
<link rel=self type=application/atom+xml href=https://www.google.com/m8/feeds/contacts/liz%40gmail.com/full/c9012de />
<link rel=edit type=application/atom+xml href=https://www.google.com/m8/feeds/contacts/liz%40gmail.com/full/c9012de />
<gd:phoneNumber rel=http://schemas.google.com/g/2005#home primary=true> 456 </gd:phoneNumber>
<gd:extendedProperty name=pet value=hamster />
<gContact:groupMembershipInfo deleted=false href=http://www.google.com/m8/feeds/groups/liz%40gmail.com/base/270f />
</entry>
</feed>

$x = new SimpleXmlElement($str);
foreach($x->entry as $t){
echo $t->id . "<br >";
echo $t->updated . "<br />";
$namespaces = $t->getNameSpaces(true);
$gd = $t->children($namespaces[gd]);
echo $gd->phoneNumber;
}

$x = new SimpleXmlElement($str);
foreach($x->entry as $t){
echo $t->id . "<br >";
echo $t->updated . "<br />";
//$namespaces = $t->getNameSpaces(true);
//注意这里与上面一段的区别
$gd = $t->children(http://schemas.google.com/g/2005);
echo $gd->phoneNumber;
}

<event:event>
<event:sessionKey></event:sessionKey>
<event:sessionName>Learn QB in Minutes</event:sessionName>
<event:sessionType>9</event:sessionType>
<event:hostWebExID></event:hostWebExID>
<event:startDate>02/12/2009</event:startDate>
<event:endDate>02/12/2009</event:endDate>
<event:timeZoneID>11</event:timeZoneID>
<event:duration>30</event:duration>
<event:description></event:description>
<event:status>NOT_INPROGRESS</event:status>
<event:panelists></event:panelists>
<event:listStatus>PUBLIC</event:listStatus>
</event:event>

$xml = @new SimpleXmlElement($str);//在前面加＠抑止错误 。
echo "<pre>";
print_r($xml);