read XML from PHP to pass in to JavaScript

Question

Can I pass an xml file to JavaScript by PHP like this:

     <?php
        $xmlDoc = new DOMDocument('1.0');
        $xmlDoc->formatOutput = true;
        $xmlDoc->load("customer.xml");
        echo $xmlDoc->saveXML();
        $strXml = $xmlDoc->saveXML(); 
        return $strXml;
        ?>

when I try to do this I get null in the server response in this line in JavaScript

var serverResponse = xHRObject.responseXML;

but,

     var spantag = document.getElementById("example").innerHTML = 
        xHRObject.responseText;

will print out the information and also prompt(spantag); will prompt the whole xml document. But I want to use the tag names. So that I need to use

var header = serverResponse.getElementsByTagName("book");

but this gives me an error since the xHRObject.responseXML is null. Please tell me what I'm doing wrong?

var xHRObject = false;
if (window.XMLHttpRequest)
{xHRObject = new XMLHttpRequest();}
else if (window.ActiveXObject)
{xHRObject = new ActiveXObject("Microsoft.XMLHTTP");}
function validate(){
    xHRObject.open("GET", "login.php", true);
    xHRObject.onreadystatechange =test;
    xHRObject.send(null); }
function test(){
    if ((xHRObject.readyState == 4) &&(xHRObject.status == 200))
        {var serverResponse = xHRObject.responseXML;
        var header = serverResponse.getElementsByTagName("customer");
        var spantag = document.getElementById("err")= xHRObject.responseText;}}

I can output via the prompt the span tag it'll give me a xml file but when I output serverResponse it'll give a null. that means responseText have a value but response xml doesn't.

Customer.xml has customers as the main tag and then I have added two customers in a customer tag. then firstname surname email tags are there.

Travis Weston · Accepted Answer · 2014-05-06 03:07:58Z

1

Try using echo $xmlDoc instead of a simple return, which doesn't actually generate any content. Passing it VIA an ajax call (which I'm assuming you are) requires that you echo or print some content on the called page.

answered May 6, 2014 at 3:07

Travis Weston

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6 Comments

Samydilini Over a year ago

I'm trying to print it using javascript not with the php. I just want to get the values to javascript through the php. However I tried what you told it still gave the same error.

Travis Weston Over a year ago

I'd need more code to go on to give a more thorough answer.

Travis Weston Over a year ago

If you could expand on the code: I.E. What file is the PHP in? Where is the JavaScript located? Are you attempting to supply the XML inside the same file as you're attempting to manipulate it with the javascript? Or are you attempting to use an AJAX call to retrieve the XML from a different file?

Samydilini Over a year ago

I have everything in one folder. customer.xml is in the same folder. I extended my question please help me in this.

Samydilini Over a year ago

rest of the file names are login.htm login.js login.php

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Jason Aller · Accepted Answer · 2014-07-14 22:30:07Z

0

Unfortunately I can't use jQuery for this.

I found the answer to the question. Actually some one taught me the problem was in my php file. I had to add the header text to that:

header('Content-Type: text/xml');

edited Jul 14, 2014 at 22:30

Jason Aller

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answered May 7, 2014 at 3:22

Samydilini

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1 Comment

Genki Over a year ago

Would you please show your completed script to pass XML from PHP to JS?

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