I need to post XML data from a textarea input to PHP so I can parse it and output a table.
I've tried a few methods and none seem to be working.
Currently I have this:
jQuery('#btnRegistrarXML').live('click', function(){
var xml;
if (jQuery('#txtRegXML').val() == ""){
AddMsg('You must paste XML from the excel export into the textarea.', 'error');
} else {
jQuery.post('registrar-xml-to-table.php', {xml:escape(jQuery('#txtRegXML').val())}, function(data){
jQuery('#regXMLasTable').empty();
jQuery('#regXMLasTable').append(data);
});
}
displayMsgs();
});
The PHP is:
$xmlraw = urldecode($_POST['xml']);
$dom = new DOMDocument;
$dom->preserveWhiteSpace = FALSE;
$dom->loadXML($xmlraw);
$dom->formatOutput = TRUE;
$xmlstr = $dom->saveXml();
$xml = simplexml_load_string($xmlstr);
echo "<p>xmlraw:</p>";
echo $xmlraw;
echo "<p>xml:</p>";
echo $xml;
foreach ($xml->document as $doc) {
echo '<p class="alert alert-error">'.$doc->title.'</p>';
}
The first echo $xmlraw is working - it outputs the XML string all on one line - the post is sending the data through properly.
The second echo $xml doesn't output anything and the foreach doesn't output anything either - something is not working in the PHP
I've also tried loading $xmlraw directly into simplexml_load_string($xmlraw) but it doesn't work - I'm assuming because it's not well formed?
The XML I'm using to test is:
<?xml version="1.0"?>
<document>
<title>
Foobar
</title>
</document>
You can paste the XML into the textarea on this ( http://tsdexter.com/webservice-testing/programs-list.php ) page and then if you inspect element underneath xmlraw: you can see that the raw xml string was echoed - however, underneath xml: there is nothing and also the foreach doesn't output anything either.
Here's a jsFiddle so you can see the HTML/JS - it doesn't actually do anything though because it can't ajax to the PHP page - so I included the PHP version above to test. http://jsfiddle.net/tsdexter/EDqQB/
Any ideas?
A few questions, which may or may not constitute an answer, but needed more space than a comment.
Why are you running urldecode on the $_POST variable? PHP should be doing that for you, unless you are double-escaping it somewhere.
Why are you loading into DOM and then SimpleXML? I know you said you tried without, but they use the same XML parser underneath, so there is no way this will help you rather than introducing more confusion.
What does var_dump(simplexml_load_string($rawxml)) give you? My guess would be FALSE, meaning an error. In which case, check you have warnings turned on (error_reporting(E_ALL); ini_set('display_errors', '1');) and detailed XML error handling turned off (libxml_use_internal_errors(false);).
In case it does give you a SimpleXMLElement object, don't spend too long looking at the var_dump output. Try one of these debugging functions instead.
Related
I am learning SimpleXML in PHP. Then I am doing simple test with SimpleXMLElement(...), I dont get anything back. Let me explain. Here is XML file:
<?xml version="1.0" encoding="UTF-8"?>
<movies>
<movie>
<title>PHP: Behind the Parser</title>
<plot>
So, this language. It's like, a programming language. Or is it a
scripting language? All is revealed in this thrilling horror spoof
of a documentary.
</plot>
<great-lines>
<line>PHP solves all my web problems</line>
</great-lines>
<rating type="thumbs">7</rating>
<rating type="stars">5</rating>
</movie>
</movies>
And here is my php file:
<?php
$xml = simplexml_load_file('example.xml');
echo $xml->getName() . "<br>"; // prints "movies"
$movies = new SimpleXMLElement($xml);
echo $movies->getName() . "...<br>"; // doesnt print anything, not event dots
echo $movies->movie[0]->plot; // even this does not print anything
?>
Only output is:
movies
Please read the comments in php file. I am trying to print xml elements in exact same way after loading file and after doing new simpleXML object. Some how it prints only first echo command results. I searched many examples and could not make it work. Where is the mistake? It is big puzzle for me, but maybe a tiny one for you.
simplexml_load_file already returns your SimpleXMLElement object. Try this:
<?php
$xml = simplexml_load_file('example.xml');
echo $xml->getName() . "<br>";
echo $xml->movie[0]->plot . "<br>\n";
?>
change this line:
$movies = new SimpleXMLElement($xml);
to this:
$movies = new SimpleXMLElement($xml->asXML());
What you are trying to do doesn't make much sense, because you are trying to load the same XML twice:
// this loads the XML from a file, giving you a SimpleXMLElement object:
$xml = simplexml_load_file('example.xml');
// this line would do what? load the XML from the XML?
$movies = new SimpleXMLElement($xml);
There are two functions for loading XML in the SimpleXML extension, both return SimpleXMLElement objects:
simplexml_load_file - takes a filename, and loads the XML in that file; with the right PHP settings, you can also give it a URL, and it will load the XML straight from there
simplexml_load_string - takes a string of XML that you've already got from somewhere else, and loads that
The third way of getting a SimpleXMLElement is calling the class's constructor (i.e. writing new SimpleXMLElement). This can actually act like either of the above: by default, it expects a string of XML (like simplexml_load_string), but you can also set the 3rd parameter to true to say that it's a path or URL (like simplexml_load_file).
The result of all three of these methods is exactly the same, they're just different ways of getting there depending on what you currently have (and, to some extent, how you want your code to look).
As a side-note, there are two more functions which do take an object of XML you've already parsed: simplexml_import_dom and dom_import_simplexml. These are actually pretty cool, because the DOM is a standard, comprehensive, but rather fiddly and verbose way of acting on XML, whereas SimpleXML is, well, simple - and using these functions you can actually use both with very little penalty, because they just change the wrapper of the object without having to re-parse the underlying XML.
try this
<?php
$movies = simplexml_load_file('sample.xml');
foreach($movies as $key=>$val)
{
echo $val->title.'<br>';
echo $val->plot.'<br>';
echo $val->rating[0];
echo $val->rating[1];
}
?>
I am grabbing the contents from google with PhP, how can I search $page for elements with the id of "#lga" and echo out another property? Say #lga is an image, how would I echo out it's source?
No, i'm not going to do this with Google, Google is strictly an example and testing page.
<body><img id="lga" src="snail.png" /></body>
I want to find the element named "lga" and echo out it's source; so the above code I would want to echo out "snail.png".
This is what i'm using and how i'm storing what I found:
<?php
$url = "https://www.google.com/";
$page = file($url);
foreach($page as $part){
}
?>
You can achieve this using the built-in DOMDocument class. This class allows you to work with HTML in a structured manner rather than parsing plain text yourself, and it's quite versatile:
$dom = new DOMDocument();
$dom->loadHTML($html);
To get the src attribute of the element with the id lga, you could simply use:
$imageSrc = $dom->getElementById('lga')->getAttribute('src');
Note that DOMDocument::loadHTML will generate warnings when it encounters invalid HTML. The method's doc page has a few notes on how to suppress these warnings.
Also, if you have control over the website you are parsing the HTML from, it might be more appropriate to have a dedicated script to serve the information you are after. Unless you need to parse exactly what's on a page as it is served, extracting data from HTML like this could be quite wasteful.
I am trying my first AJAX and having a problem with my xml receiving function.
I alert responseText and I can see the xml returned from my server, but when I try and get responseXML I get null and the error.
Here is the php function that builds my xml
header('Content-type: application/xml');
echo("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
echo("<results>");
echo("<table><![CDATA[tablereererere]]></table>");
//echo("<ratedTable>".$_POST['ratedTable']."</ratedTable>\n");
//echo("<table>".$_POST['table']."</table>\n");
//echo("<post_id>".$_POST['post_id']."</post_id>\n");
//echo("<user_id>".$_POST['user_id']."</user_id>\n");
//echo("<rating>".$_POST['rating']."</rating>\n");
echo("</results>");
And here is my javascript function which is processing the returned xml
function ajaxReceiver(http_request) {
//this function continues to run until a result is returned and then it creates the new div
if(http_request.readyState == 4) {
response_xml = http_request.responseXML;
response_text = http_request.responseText;
alert(response_text);
alert(response_xml.getElementsByTagName("table")[0].textContent);
//document.getElementById('floatingNotification').innerHTML = response_text;
// alert(http_request.responseXML.getElementsByTagName("table")[0].textContent);
//ratedTable = responseXML.getElementsByTagName("table").value;
//alert(ratedTable);
//message = response.getElementsByTagName('table')[0].textContent;
//alert(message);
//alert(message);
//this response contains the xml document that was returned by the php function.You can get any values out of the xml document and
//use javascript dom to manipulate the contents on the page
}
}
It may be because, even though you're setting the content-type correctly, you need to have an <xml tag in the top of your response. Also, you aren't closing your last tag properly. This should work:
echo("<?xml version='1.0'?>");
echo("<results>");
echo("<ratedTable>".$_POST['ratedTable']."</ratedTable>");
echo("<table>".$_POST['table']."</table>");
echo("<post_id>".$_POST['post_id']."</post_id>");
echo("<user_id>".$_POST['user_id']."</user_id>");
echo("<rating>".$_POST['rating']."</rating>");
echo("<message>$message</message>");
echo("</results>");
For more info on how to define your XML: http://www.w3.org/TR/REC-xml/#sec-prolog-dtd
You are closing the parent node improperly (</results> not <results/>) and you should (after sanitizing it) wrap all the POSTDATA in <![CDATA[...]]> tags to be safe. Make sure it's UTF8 encoded, too (see utf8_encode())
EDIT: and what wajiw said about the <?xml version="1.0" encoding="UTF-8" ?> tag at the beginning.
Edit: Example CDATA Block Usage
<?xml version="1.0" encoding="UTF-8" ?>
<myNode>
<myData><![CDATA[
Now I just throw in my data, for fun and profit!
This way I can use special, reserved characters like <, > and &!
]]></myData>
</myNode>
Edit Yet Again:
Why not give Content-Type: text/xml, NOT application/xml, a go?
The answer is to put the asynchronous property in the function "open()" to false.
Like this:
ajaxObject.open("POST", "my_XML_Generator.php", false);
ajaxObject.setRequestHeader("Content-type", "text/xml");
ajaxObject.send();
I had the same problem and couldn't solve it until I put my results into subnodes, e.g.
header("Content-Type: text/xml; charset=utf-8");
echo("<?xml version='1.0' encoding='utf-8'?>\n");
echo("<summary>$summary</summary>\n");
echo("<content>$content</content>\n");
didn't work for me for some weird reason, but this does:
header("Content-Type: text/xml; charset=utf-8");
echo("<?xml version='1.0' encoding='utf-8'?>\n");
echo("<page>\n");
echo(" <summary>$summary</summary>\n");
echo(" <content>$content</content>\n");
echo("</page>\n");
My code retrieving the answer is
function retrieveRequest(title)
{
if (_xmlRequest.readyState == 4 && _xmlRequest.status == 200)
{
var xmlResponse = _xmlRequest.responseXML;
_divSummary.innerHTML = xmlResponse.getElementsByTagName("summary")[0].textContent;
_divContent.innerHTML = xmlResponse.getElementsByTagName("content")[0].textContent;
}
}
I had this error happen to our team once and it took me a long time before we realized that the problem was in our XML data returned from the server. In particular, PHP script that generated return XML string was the culprit.
My solution was to remove any white space from the beginning of the PHP script. I mean any spaces, new lines, and/or tabs need to be removed from the beginning of the script, so that the first thing in the script is the <?php tag itself. It turned out that the <?PHP tag was not the first thing on the first line of my PHP script; somehow I started my code on the second line and the first script line was simply an empty one.
It drove me mad and it took some time for me to figure this out, so I hope someone else can benefit from this solution. It is very simple and easy to try if all else fails.
I have been trying to output XML with PHP but encountered a strange(!) error in Internet Explorer.
The expected xml output is this:(simplified)
<root>
<match_id>12</match_id>
<stadium_id>43</stadium_id>
<tribune_id>2</tribune_id>
<fan_id>453</fan_id>
</root>
I am producing this output with the following PHP code:
echo "<?xml version='1.0' encoding='utf-8' ?>
<root>
<match_id>"; echo $match->getId(); echo "</match_id>
<stadium_id>43</stadium_id>
<tribune_id>2</tribune_id>
<fan_id>".$_SESSION['user_id']."</fan_id>
</root>";
In Firefox, the output is same as expected. However, in IE, the output is this:
<?xml version="1.0" encoding="utf-8" ?>
<root>
<match_id>0</match_id>
<stadium_id>43</stadium_id>
<tribune_id>2</tribune_id>
<fan_id />
</root>
This is a really annoying error. I have set the PHP header for XML output, and changed lots of other things but could not make it work.
The $match->getId() part is just returning an integer but IE always shows this value as 0. If I set <fan_id> and <match_id> manually, IE shows the values correctly.
By the way, I am using this XML output in Flash (AS3) and this also shows the same result with IE.
What am I doing wrong?
This looks like it's due to a session difference - the IE session isn't storing the user id. Similarly, $match->getId() is actually 0 - I imagine you'd get a similar result using Chrome or Safari or a web browser on any other computer.
One other thing: Flash may not be sending the PHP session cookie to the server on the request - which would match the IE behavior / no valid session.
Try:
header( "content-type: application/xml; charset=ISO-8859-15" );
OR
$doc = new DOMDocument;
$root = $doc->createElement('root');
$doc->appendChild($root);
$match_id = $doc->createElement('match_id', $match->getId());
$root->appendChild($match_id);
$stadium_id = $doc->createElement('stadium_id', '43');
$root->appendChild($stadium_id);
$tribune_id = $doc->createElement('tribune_id', '2');
$root->appendChild($tribune_id, '2');
$fan_id = $doc->createElement('fan_id', $_SESSION['user_id']);
$root->appendChild($fan_id);
echo $doc->saveXML();
//$doc->save('file.xml'); // if you want to write to file
What browser is used has no effect on how your PHP executes (because it's executed on server, not in browser). Notice that in the second example your fan_id is also empty, which indicates something's wrong with your session setup. Investigate this.
Having said all that: did you consider using simplexml() to output XML from PHP? It's much more fun to use than echoing tags.
I have an url return an XML page result. When I use this command:
print_r(file($url));
Its done, but when I use command:
$doc = load($url);
after that I :
print_r($doc);
it out. Its print_r out nothing. I'm quite new in work with XML in PHP someone give advise, please!
Thank you for your attention!
I am not really sure what you trying to do but for parsing an xml file in PHP there two main ways: DOM
$doc = new DOMDocument();
$doc->loadXML(file_get_contents($url));
SimpleXML
$xml = new SimpleXMLElement(file_get_contents($xmlstr));
file_get_contents Reads entire file into a string
#deceze and RageZ:
I'm using load() to get its attribute like this
$url = 'web address return an XML result';
$xml = load($url);
$node1 = $xml->getElmentsByTagName('tagname');
$value = $node1->getAttribute('attribute1');
But I have an error $xml is not an object and I check out by print_r and I get nothing but with print_r(file($url)) its print out an array as I expect!
#Franz: May be I get an error tag in XML file but I could not fixed this just work with the result!
You could also unserialize the xml into a php array and use print_r(array). Take a look here: http://articles.sitepoint.com/article/xml-php-pear-xml_serializer/3#
You will need a PEAR package for this