Reading xml file in php

Question

I have a question regarding reading an xml file with php. I have a sample php file:

///file.xml

 <appender name="app1">
      <param name="param1"></param>
 </appender>

Now i want to get the value of the param name. I have this code.

function getURL($aURL){

$objDOM = new DOMDocument();

////the file.xml    
$objDOM->load($aURL);  
$note = $objDOM->getElementsByTagName("appender");

foreach ( $note as $value)  {
    ///First try
    $name = $value->getElementsByTagName("name")->firstChild->nodeValue;

    ///Second try
    ///$logName = $value->getElementsByTagName("name");
    ///$name = $logName->item(0)->nodeValue;

}

}

For my First and Second try both returns empty. Does not give the "app1" value.

Can someone help me on this?

Thank you.

*(related)* [Noob Question about DOMDocument](http://stackoverflow.com/questions/4979836/noob-question-about-domdocument-in-php/4983721#4983721) — Gordon, Feb 07 '12 at 09:00
possible duplicate of [How to extract a node attribute from XML using PHP's DOM Parser](http://stackoverflow.com/questions/3993302/how-to-extract-a-node-attribute-from-xml-using-phps-dom-parser) — Gordon, Feb 07 '12 at 09:00

Mariusz Jamro · Accepted Answer · 2012-02-07T10:49:34.637

2

The name of the tag is param and the name of the attribute is name:

$name = $value->getElementsByTagName("param")->firstChild->getAttribute('name')->nodeValue;

edited Feb 07 '12 at 10:49

answered Feb 07 '12 at 08:56

Mariusz Jamro

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thanks @Secator but but it seems to not work :( gives me this "Object of class DOMElement could not be converted to string in" error – tinks Feb 07 '12 at 10:00
Try adding `->nodeValue` at the end. – Mariusz Jamro Feb 07 '12 at 10:49

Mark Baker · Answer 2 · 2012-02-07T10:10:53.633

1

name is not an element, it's an attribute of the appender element

$name = $value->getElementsByTagName("param")->firstChild->getAttribute("name");

EDIT

$data = '<appender name="app1">
    <param name="param1"></param>
    <param name="param2"></param>
</appender>';

$objDOM = new DOMDocument();
$objDOM->loadXML($data);

$appenders = $objDOM->getElementsByTagName("appender");

foreach ($appenders as $appender)  {
    $params = $appender->getElementsByTagName("param");
    foreach($params as $param) {
        $name = $param->getAttribute("name");
        var_dump($name);
        break;
    }
}

edited Feb 07 '12 at 10:10

answered Feb 07 '12 at 08:55

Mark Baker

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thanks @Mark Baker. but it seems to not work :( gives me this "Object of class DOMElement could not be converted to string in" error – tinks Feb 07 '12 at 10:00

score 1 · Answer 3 · answered Feb 07 '12 at 09:39

1

@Tinks with "SimpleXML" its a bit easier to read the values.

<?php
  $xmlString = '<appender name="app1">
      <param name="param1" value="2">123</param>
      <param name="param2" value="3">345</param>
 </appender>';

$xml = new SimpleXMLElement($xmlString);

foreach($xml->param as $out) {
    echo $out['name']."  ";
    echo $out['value']."<br />";
}
?>

Here is a short example how to read an xml file.

answered Feb 07 '12 at 09:39

René Höhle

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but because i need to load the file first since it is a different xml file @Stony – tinks Feb 07 '12 at 10:05
then use file_get_contents('file.xml') to get the content. new SimpleXMLElement(file_get_contents('file.xml')); – René Höhle Feb 07 '12 at 14:03

score 0 · Answer 4 · answered Feb 07 '12 at 09:00

0

Your nodeValue is really empty. According to <param name="param1"></param> , you did not specify one. Use getAttribute method instead.

answered Feb 07 '12 at 09:00

Raptor

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45
230
366

score -1 · Answer 5 · answered Feb 07 '12 at 09:58

-1

Here's what to do:

Load the XML file
Get the name of the first element
Create a loop that will trigger on each child node, using the children() function
Output the element name and data for each child node

answered Feb 07 '12 at 09:58

Piyush Pagariya

17
1
6

Reading xml file in php

5 Answers5