Simplexml, accessign data

[nikohak]

Hi,

What do I need to write to get the content of xml page-tag that has id "story2" to appear on the screen, in other words: "head2"?

I have the xml already loaded with simplexml into $myXml variable and it works just fine, but this particular thing is giving me headache.

 

So it's something like: echo $myXml->page...

 

Here is the XML:

 

<?xml version="1.0" encoding="utf-8"?>

<content>

<page id="story1" langurl="1">head1</page>

<page id="story2" langurl="2">head2</page>

<page id="story3" langurl="3">head3</page>

<page id="story4" langurl="4">head4</page>

<page id="story5" langurl="5">head5</page>

<page id="story6" langurl="6">head6</page>

</content>

[rajivgonsalves]

this should help, not too sure if this is the most optimal way to do it though

 

<?php

$str = '<?xml version="1.0" encoding="utf-8"?>
<content>
<page id="story1" langurl="1">head1</page>
<page id="story2" langurl="2">head2</page>
<page id="story3" langurl="3">head3</page>
<page id="story4" langurl="4">head4</page>
<page id="story5" langurl="5">head5</page>
<page id="story6" langurl="6">head6</page>
</content>
';

$xml = simplexml_load_string($str);

for ($i=0;$i<count($xml->page);$i++) {
    $attribs = getAttributes($xml->page[$i]);

    if ($attribs['id'] == 'story2') {
        echo $xml->page[$i];
    }
}

function getAttributes(&$node) {
    $attribs = array();
    foreach ($node->attributes() as $name => $attr) {
        $attribs[$name] = (string) $attr[0];
    }
    return $attribs;
}
?>

[nikohak]

ok, I will take a look at that.

 

Somehow I would have thought that this is so common that there would be a ready syntax for this.

Something like:

 

$myXml->page[id=story1] ?

[rajivgonsalves]

actually there is salathe had pointed it out earlier in one of my other post

 

 

print_r($xml->xpath('//content/page[@id="story2"]'))

[nikohak]

Ok that seems to work. Can I squeeze the last detail from you? That code gives an array, so if I read it into a variable and then do $var[0] it'll give me what I need. But can I somehow get it directly.

[rajivgonsalves]

Yeah you could try this

 

echo array_pop($xml->xpath('//content/page[@id="story2"]'))

[nikohak]

Thanks for this. That works just perfectly!

[salathe]

[ot]Or current, that's my fav. for grabbing the XPath match.

 

P.S. Lots of (Simple)XML questions lately. [/ot]