parse XML attribute via PHP XMLReader

Question

the followings are XML sample code.

<m:ad xmlns:m="http://www.w3c.org/soap">
    <title><![CDATA[TITLE]]></title>
    <phone>123456789</phone>
    <attributeGroup>
       <attribute id="14" name="A1">40</attribute>
       <attribute id="15" name="A2">50</attribute>
   </attributeGroup>
</m:ad>

I only know PHP XMLReader to get value

$reader = new XMLReader();        
if ($reader->name == "title" && $reader->nodeType ==XMLReader::ELEMENT) {
    echo $reader2->read(); // will get TITLE   
 }

But how to get attribute A1, A2 . I would like to get 40, and 50 both .

VolkerK · Accepted Answer · 2010-04-22 12:05:48Z

5

$reader = new XMLReader();
$reader->xml('<m:ad xmlns:m="http://www.w3c.org/soap">
    <title><![CDATA[TITLE]]></title>
    <phone>123456789</phone>
    <attributeGroup>
       <attribute id="14" name="A1">40</attribute>
       <attribute id="15" name="A2">50</attribute>
   </attributeGroup>
</m:ad>');


while ( $reader->read() ) {
  if (  $reader->nodeType ==XMLReader::ELEMENT && $reader->name == "attribute" ) {
    printf("id=%s, name=%s\n", $reader->getAttribute('id'), $reader->getAttribute('name'));
  }
}

prints

id=14, name=A1
id=15, name=A2

answered Apr 22, 2010 at 12:05

VolkerK

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3 Comments

SDC Over a year ago

+1, but what if I don't know what attributes will be supplied?

VolkerK Over a year ago

SDC: That question is a little bit too broad for me to answer. What are you trying to achieve? Could be that schemas are what you're looking for, or something like odata, may even be that transforming via XSL(t) is the answer ....or something completely different ;-)

SDC Over a year ago

I ended up using $reader->attributeCount and then a using for() loop to read each attribute in turn using $reader->moveToAttributeNo(). That allows me to access all attributes, without having to know in advance what they will be.

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