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get xpath attributes from xml

Posted on 2010-08-18
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Last Modified: 2013-11-11
Im trying to echo the attribute from popularity xpath. Im getting errors.

The results should read: 4759525

Not sure what im doing wrong, here is my code:
feed2......

<SERVER VER="0.9" URL="computersciencelaboratories.com/" HOME="0" AID="=">
<SD TITLE="A" FLAGS="" HOST="computersciencelaboratories.com">
<LINKSIN NUM="3"/>
</SD>
<SD>
<POPULARITY URL="computersciencelaboratories.com/" TEXT="4759525"/>
<REACH RANK="4682738"/>
<RANK DELTA="-704558"/>
</SD>
</SERVER>


$xml2 = simplexml_load_file("$feed2");
$result2 = $xml2->xpath(server/sd[2]/popularity/@text);
echo $result2[0]->asXml();

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Question by:Zeke Rich
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Expert Comment

by:Geert Bormans
ID: 33472221
XML and XPath are case sensitive
The correct XPath would be

xpath(/SERVER/SD[2]/POPULARITY/@TEXT)

I am not sure about the PHP, I think you need quotes around the XPath

xpath("/SERVER/SD[2]/POPULARITY/@TEXT")
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Expert Comment

by:Geert Bormans
ID: 33472556
By the way, I am pretty uncertain about this
simplexml_load_file("$feed2")
I think it should be
simplexml_load_file($feed2)
otherwise the variable would be regarded as a string
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Author Comment

by:Zeke Rich
ID: 33472609
I got this working!!!  But the XML is not complete.....
$string = <<<XML
<SD>
<POPULARITY URL="computersciencelaboratories.com/" TEXT="4759525"/>
<REACH RANK="4682738"/>
<RANK DELTA="-704558"/>
</SD>
XML;

$xml = simplexml_load_string($string);
foreach($xml->POPULARITY[0]->attributes() as $a => $b) {
    echo $a,'="',$b,"\"\n";
}

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Author Comment

by:Zeke Rich
ID: 33472615
Im trying to get this to work, it has the complete XML. But i am getting errors. I am so close i can taste the error.
$string = <<<XML
<SERVER VER="0.9" URL="computersciencelaboratories.com/" HOME="0" AID="=">
<SD TITLE="A" FLAGS="" HOST="computersciencelaboratories.com">
<LINKSIN NUM="3"/>
</SD>
<SD>
<POPULARITY URL="computersciencelaboratories.com/" TEXT="4759525"/>
<REACH RANK="4682738"/>
<RANK DELTA="-704558"/>
</SD>
</SERVER>
XML;

$xml = simplexml_load_string($string);
foreach($xml->POPULARITY[0]->attributes() as $a => $b) {
    echo $a,'="',$b,"\"\n";
}

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Expert Comment

by:Geert Bormans
ID: 33472624
what errors do you get?
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Author Comment

by:Zeke Rich
ID: 33472646
Fatal error: Call to a member function attributes() on a non-object in script.php on line 26
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Accepted Solution

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Geert Bormans earned 2000 total points
ID: 33472829
why did you leave the XPath path?
I don't know enough about php, but the line with POPULARITY[0] smells rotten
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Author Comment

by:Zeke Rich
ID: 33472841
i left the xpath because i couldnt get it working and i was trying other examples.

I finally got it to work though :)

$xml->SD[1]->POPULARITY[0]->attributes()

Thanks so much for your help, i didnt know it was case sensitive.
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Author Closing Comment

by:Zeke Rich
ID: 33472859
He is a Genius.
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Expert Comment

by:Geert Bormans
ID: 33472904
welcome
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