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XML Expat Parser

Posted on 2008-10-20
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Last Modified: 2013-12-13
I'm fairly new to PHP, and I'm looking for some sample Expat code that rolls the following XML into a PHP array:

<Casetrack RelativeMonth="1" Day="1"/>
<Casetrack RelativeMonth="1" Day="2"/>
<Casetrack RelativeMonth="1" Day="3"/>
<Casetrack RelativeMonth="1" Day="7"/>
<Casetrack RelativeMonth="1" Day="8"/>

(I did not omit the DTD, it doesn't exist.)
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Question by:jdana
4 Comments
 
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by:thebradnetwork
thebradnetwork earned 83 total points
ID: 22763715
Here is a good link for you to learn more about PHP.
http://www.w3schools.com/php/default.asp

What is that code suppose do do?
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Assisted Solution

by:Xyptilon2
Xyptilon2 earned 83 total points
ID: 22764076
You can load the XML into an array with the php function SimpleXMLElement(), simplexml_load_string() or simplexml_load_file() function.

<?PHP
$string = <<<XML
<?xml version='1.0'?>
<Casetrack RelativeMonth="1" Day="1"/>
<Casetrack RelativeMonth="1" Day="2"/>
<Casetrack RelativeMonth="1" Day="3"/>
<Casetrack RelativeMonth="1" Day="7"/>
<Casetrack RelativeMonth="1" Day="8"/>
XML;

$xml = simplexml_load_string($string);

var_dump($xml);
?>

The variabele $xml will contain the XML data over which you can then loop or do other things. Goodluck, i hope this is useful. For more information see: http://cn2.php.net/manual/en/function.simplexml-load-string.php
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LVL 25

Accepted Solution

by:
Marcus Bointon earned 84 total points
ID: 22765333
Once you have parsed the XML as Xyptilon2 suggests, you then want to extract the parts you want. I'd suggest that XPath is the best way to do that, and SimpleXML has support for it:

http://uk2.php.net/manual/en/function.simplexml-element-xpath.php
XPath syntax is here:
http://www.w3schools.com/xpath/xpath_syntax.asp

You would probably want something like this:

$data = $xml->xpath('Casetrack');
var_dump($data);
0
 

Author Closing Comment

by:jdana
ID: 31507788
Thanks for the advice.  I'll actually got the Expat parser working with my array.  It's not easy to learn, but once you get it, it's pretty powerful.
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