i am trying to create a page of xml from php
$xml = new DOMDocument();
$xml->load("recv.xml") or exit("not loaded");
$xml_album = $xml->createElement("Album");
$xml_track = $xml->createElement("Track");
$xml_album->appendChild( $xml_track );
$xml->appendChild( $xml_album );
$doc->save('recv.xml');
this is my script but it is not working
Do i need to include to any file. Help me
Edit, error description according to comment;
DOMDocument::load() [function.DOMDocument-load]:
Start tag expected, '<' not found
You should probably create a fresh new document instead of loading existing not properly formed document.
$xml = new DOMDocument();
//$xml->load("recv.xml") or exit("not loaded"); - do not load the existing document!!!!
$xml_album = $xml->createElement("Album");
$xml_track = $xml->createElement("Track");
$xml_album->appendChild( $xml_track );
$xml->appendChild( $xml_album );
$xml->save('recv.xml');
XML is not allowed to have more than one root node, so if you are using <Album> as a root, opening existing document and adding one more root node will also produce error.
Related
I have wrote this code in PHP to compile an XML file with parameters that are in URL.
But when the XML file is already created instead of adding the new data at the bottom of file inside the root element, overwrite it and delete all old data.
Where is the problem?
I have seen some examples online but I can't figure out how fix it.
I need to verify if file already exist and then add the element?
Or I need to read it and then add again the old elements and new?
I don't know very well dom so I can't figure out
<?php
$FOL = $_GET["FOL"];
$NUM = $_GET["NUM"];
$DAT = $_GET["DAT"];
$ZON = $_GET["ZON"];
$TIP = $_GET["TIP"];
$COM = $_GET["COM"];
$dom = new DOMDocument();
$dom->encoding = 'utf-8';
$dom->xmlVersion = '1.0';
$dom->formatOutput = true;
$xml_file_name = "$NUM.xml";
$xmlString = file_get_contents($xml_file_name);
$dom->loadXML($xmlString);
$loaded_xml = $dom->getElementsByTagName('Territorio');
$territorio_node = $dom->createElement('Territorio');
$child_node_NOM = $dom->createElement('NOM', "$NOM");
$territorio_node->appendChild($child_node_NOM);
$child_node_NUM = $dom->createElement('NUM', "$NUM");
$territorio_node->appendChild($child_node_NUM);
$child_node_DAT = $dom->createElement('DAT', "$DAT");
$territorio_node->appendChild($child_node_DAT);
$child_node_ZON = $dom->createElement('ZON', "$ZON");
$territorio_node->appendChild($child_node_ZON);
$dom->appendChild($territorio_node);
$child_node_TIP = $dom->createElement('TIP', "$TIP");
$territorio_node->appendChild($child_node_TIP);
$child_node_COM = $dom->createElement('COM', "$COM");
$territorio_node->appendChild($child_node_COM);
$dom->appendChild($territorio_node);
$dom->save($FOL.'/'.$xml_file_name);
echo "$xml_file_name creato correttamente";
?>
as per the comment: You should check that the root node of the XML file exists before calling createElement to generate a new one. To do that you can call getElementsByClassName and test whether the first entry is empty
ie: empty( $dom->getElementsByTagName('Territorio')[0] ) sort of thing...
If the root node exists we use that, otherwise add a new root to the document and continue
// check that the querystring has all the required parameters
if( isset(
$_GET['FOL'],
$_GET['NUM'],
$_GET['DAT'],
$_GET['ZON'],
$_GET['TIP'],
$_GET['COM']
)){
// the filename is generated from one of the querystring parameters
// - here the directory used is the same as the script running
$file=sprintf( '%s/%s.xml', __DIR__, $_GET['NUM'] );
// create an empty file if it does not exist
if( !file_exists( $file )){
file_put_contents( $file, '' );
}
clearstatcache();
// create the DOMDocument and set various options
libxml_use_internal_errors( true );
$dom=new DOMDocument('1.0','utf-8');
$dom->strictErrorChecking=false;
$dom->preserveWhiteSpace=true;
$dom->formatOutput=true;
$dom->recover=true;
// load the XML file directly rather than loading a string read from the original file.
$dom->load( $file );
// The ROOT node of the document ... does it exist? if not, create it and add to the DOM.
$root=$dom->getElementsByTagName('Territorio')[0];
if( empty( $root ) ){
$root=$dom->createElement('Territorio');
$dom->appendChild( $root );
}
// I added this part so that you can distinguish easily new elements
$record=$dom->createElement('record');
$root->appendChild( $record );
// add all the querystring parameters within the new record.
$record->appendChild( $dom->createElement('NUM', $_GET["NUM"] ) );
$record->appendChild( $dom->createElement('DAT', $_GET["DAT"] ) );
$record->appendChild( $dom->createElement('ZON', $_GET["ZON"] ) );
$record->appendChild( $dom->createElement('TIP', $_GET["TIP"] ) );
$record->appendChild( $dom->createElement('COM', $_GET["COM"] ) );
$record->appendChild( $dom->createElement('FOL', $_GET["FOL"] ) );
$dom->save( $file );
}
An example of the XML generated:
<?xml version="1.0" encoding="utf-8"?>
<Territorio>
<record>
<NUM>wibble</NUM>
<DAT>25/10/2022</DAT>
<ZON>europe</ZON>
<TIP>total</TIP>
<COM>94</COM>
<FOL>234</FOL>
</record>
<record>
<NUM>wibble</NUM>
<DAT>26/10/2022</DAT>
<ZON>europe</ZON>
<TIP>total</TIP>
<COM>96</COM>
<FOL>238</FOL>
</record>
</Territorio>
In the original code the file is saved to a location defined by another parameter in the querystring ( only just noticed that afterwards ) so rather than
$file=sprintf( '%s/%s.xml', __DIR__, $_GET['NUM'] );
you would likely want to do:
$file=sprintf( '%s/%s.xml', $_GET['FOL'], $_GET['NUM'] );
The root node of an XML document is called document element and here is an property for it. So you can just check if it is undefined. However an document can have only a single document element, so will need to modify the structure of your XML - for example add a "Territori" document element.
Do not use the second argument of the createElement() method or the $nodeValue property. Their escaping is broken - try adding a value with an &. Use $textContent or add a text node.
In modern DOM you can even just append() a string.
$NUM = "NUM";
$DAT = "DAT";
$ZON = "ZON";
$document = new DOMDocument('1.0', 'UTF-8');
// let the parser ignore existing indents
$document->preserveWhiteSpace = false;
$document->loadXML(getXMLString());
// fetch or create document element
$territori = $document->documentElement
?? $document->appendChild($document->createElement('Territori'));
// create/append an item element
$territori
->appendChild(
$territorio = $document->createElement('Territorio')
);
// create/append an element and set its text content
$territorio
->appendChild($document->createElement('NUM'))
->textContent = $NUM;
// create/append an element with a text child node
$territorio
->appendChild($document->createElement('DAT'))
->appendChild($document->createTextNode($DAT));
// create/append an element and a string (DOM Level 3)
$territorio
->appendChild($document->createElement('ZON'))
->append((string)$ZON);
// enable output formatting
$document->formatOutput = true;
echo $document->saveXML();
function getXMLString() {
return <<<'XML'
<?xml version="1.0"?>
<Territori>
<Territorio>
<NUM>NUM</NUM>
<DAT>DAT</DAT>
<ZON>DAT</ZON>
</Territorio>
</Territori>
XML;
}
For a more flexible approach to fetch nodes use Xpath expressions. Here is an example that checks if an Territorio with a specific NUM value exists:
$document = new DOMDocument('1.0', 'UTF-8');
$document->loadXML(getXMLString());
$xpath = new DOMXpath($document);
if ($xpath->evaluate('count(//Territorio[NUM="NUM"]) > 0')) {
echo "Node exists";
}
Creating the DOMDocument object:
$getToken = '<getToken>...</getToken>';
$getToken_objeto = new DOMDocument("1.0", "UTF-8");
$getToken_objeto -> loadXML($getToken);
Trying to append a XML string (Signature) into the DOMDocument created above:
$Signature = '<Signature>...</Signature>';
$Signature_objeto = new DOMDocument("1.0", "UTF-8");
$Signature_objeto -> loadXML($Signature);
$Signature_nodeList = $Signature_objeto -> getElementsByTagName("Signature");
$Signature_node = $Signature_nodeList -> item(0);
$getToken_objeto -> importNode($Signature_node, true);
$getToken_objeto -> appendChild($Signature_node);
I get 2 errors:
Fatal error: Uncaught exception 'DOMException' with message 'Wrong Document Error' in C:...
DOMException: Wrong Document Error in C:...
Seems simple to resolve but im quite unexperienced using the PHP DOM extension.
Thanks in advance.
You're trying to append the original node - not the imported one.
$Signature_node = $getToken_objeto->importNode(
$Signature_nodeList->item(0), true
);
You're trying to append the node to the document, but an XML document can only have a single document element and it already has one. You can append it to the document element:
$getToken_objeto->documentElement->appendChild($Signature_node);
But PHP can load XML fragments directly into a DOMDocumentFragment.
$xml = '<getToken>...</getToken>';
$fragmentXml = '<Signature>...</Signature>';
$dom = new DOMDocument();
$dom->loadXML($xml);
$xpath = new DOMXpath($dom);
$fragment = $dom->createDocumentFragment();
$fragment->appendXml($fragmentXml);
$xpath
->evaluate('//getToken')
->item(0)
->appendChild($fragment);
echo $dom->saveXml();
Following is the node I am trying to create in my XML -
<?xml version="1.0" standalone="no" ?>
<manifest identifier="com.scorm.golfsamples.contentpackaging.multioscosinglefile.20043rd"
version="1"
xmlns="http://www.imsglobal.org/xsd/imscp_v1p1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:adlcp="http://www.adlnet.org/xsd/adlcp_v1p3"
xmlns:adlseq="http://www.adlnet.org/xsd/adlseq_v1p3"
xmlns:adlnav="http://www.adlnet.org/xsd/adlnav_v1p3"
xmlns:imsss="http://www.imsglobal.org/xsd/imsss"
xsi:schemaLocation="http://www.imsglobal.org/xsd/imscp_v1p1 imscp_v1p1.xsd
http://www.adlnet.org/xsd/adlcp_v1p3 adlcp_v1p3.xsd
http://www.adlnet.org/xsd/adlseq_v1p3 adlseq_v1p3.xsd
http://www.adlnet.org/xsd/adlnav_v1p3 adlnav_v1p3.xsd
http://www.imsglobal.org/xsd/imsss imsss_v1p0.xsd">
Code is working fine for identifier and version attribute but unable to generate it with namespace like xmlns="http://www.imsglobal.org/xsd/imscp_v1p1"
Tried this code from here but unable to make it :(
$doc = new DOMDocument( '1.0' );
$doc->loadXML( $source );
// (1) We just create a "namespace'd" attribute without appending it to any element.
$attr_ns = $doc->createAttributeNS( '{namespace_uri_here}', 'example:attr' );
print $doc->saveXML() . "\n";
Codepad Link - http://codepad.org/uLJc4hpP
Full code -
//creating an XML document
$dom = new DOMDocument('1.0');
$dom->xmlStandalone = false;
//create element manifest
$manfiestNode = $dom->createElement('manifest',"");
//create attribute identifier
$manfiestNodeAttr = $dom->createAttribute('identifier');
//value for the manifest node identifier value
$date = new DateTime();
$manfiestNodeAttr->value = 'course_'.date_format($date,'U');
//append attribute to the manifest element
$manfiestNode->appendChild($manfiestNodeAttr);
//create attribute with an associated namespace
$nodeAttr = $manfiestNode->createAttributeNS('{namespace_uri_here}', 'example:attr');
//append namespace to the manifest element
$nodeAttr->appendChild($manfiestNode);
//append manifest element to the document
$dom->appendChild($manfiestNode);
var_dump($dom->saveXML());
Let me know what I am conceptually doing wrong and how could I make it working.
I tried by changing $manfiestNode to $dom in line 20[codepad link] but still no luck :(.
Error-
Fatal error: Call to undefined method DOMElement::createAttributeNS()
on line 20
Try with createAttribute like following
$dom = new DOMDocument('1.0','UTF-8');
// root manifest
$root = $dom->appendChild($dom->createElement('manifest'));
// identifier
$date = new DateTime();
$manfiestNodeAttr_value = 'course_'.date_format($date,'U');
$root->appendChild($dom->createAttribute('identifier'))->appendChild($dom->createTextNode($manfiestNodeAttr_value));
// version
$version = 1;
$root->appendChild($dom->createAttribute('version'))->appendChild($dom->createTextNode($version));
// xmlns:xsi
$root->appendChild($dom->createAttribute('xmlns:xsi'))->appendChild($dom->createTextNode("http://www.w3.org/2001/XMLSchema-instance"));
print_r($dom->saveXML());
Demo Codepad: http://codepad.org/zgug0Gl3
How to create a valid XML tree using only PHP?
I have been running into many troubles with creating an XML tree just using PHP. I already have some code to show where I am at right now:
$xml = new DOMDocument("1.0");
$verb = $xml->createElement ('verb');
$vtext = $xml->createTextNode($_POST['verb']);
$verb->appendChild($vtext);
$xml->appendChild ($verb);
$adverb = $xml->createElement ('adverb');
$advtext = $xml->createTextNode($_POST['adverb']);
$adverb->appendChild($advtext);
$xml->appendChild ($adverb);
$xml ->save("'".$_POST[verb]."'.xml") or die ("error creating file");
So, with this and the user input, it creates a file that is whatever the verb is. The only thing is, I keep getting error messages that there is extra content below the verbs.
I know that this is because I'm not adding a root element, but how exactly would you add this root element without creating errors? There are very little forums even talking about PHP and XML alone, so it's hard to find one that's about making an XML tree.
How about something like this?
$xml = new DOMDocument("1.0");
$root = $xml->createElement ('root');
$xml->appendChild($root);
$verb = $xml->createElement ('verb');
$vtext = $xml->createTextNode($_POST['verb']);
$verb->appendChild($vtext);
$root->appendChild ($verb);
$adverb = $xml->createElement ('adverb');
$advtext = $xml->createTextNode($_POST['adverb']);
$adverb->appendChild($advtext);
$root->appendChild ($adverb);
$xml ->save("'".$_POST[verb]."'.xml") or die ("error creating file");
This is a sample i have found in stackoverflow and this work for me! hope this will also help you!
<?php
/* create a dom document with encoding utf8 */
$domtree = new DOMDocument('1.0', 'UTF-8');
/* create the root element of the xml tree */
$xmlRoot = $domtree->createElement("xml");
/* append it to the document created */
$xmlRoot = $domtree->appendChild($xmlRoot);
$currentTrack = $domtree->createElement("track");
$currentTrack = $xmlRoot->appendChild($currentTrack);
/* you should enclose the following two lines in a cicle */
$currentTrack->appendChild($domtree->createElement('path','song1.mp3'));
$currentTrack->appendChild($domtree->createElement('title','title of song1.mp3'));
$currentTrack->appendChild($domtree->createElement('path','song2.mp3'));
$currentTrack->appendChild($domtree->createElement('title','title of song2.mp3'));
/* get the xml printed */
echo $domtree->saveXML();
?>
How exactly would you add this root element without creating errors?
For a DOMDocument (in general, not only for the PHP extension), the documentElement (often also called root element) is technically a child-node of the DOMDocument object.
You create it by appending it (as you already do (!)):
$xml = new DOMDocument("1.0");
$root = $xml->createElement ('root');
$xml->appendChild($root);
The new documentElement now is available as:
$xml->documentElement;
Try it your own (online Demo):
$xml = new DOMDocument("1.0");
$xml->save('php://output'); // document is empty
The output is just the XML declaration, no root element:
Then adding the root element (here named root):
$root = $xml->createElement ('root');
$xml->appendChild($root);
$xml->save('php://output'); // document has root-node now
And the Document has a Root-Node now as the output shows:
<?xml version="1.0"?>
<root/>
The $root is the documentElement now and Children can be appended to it:
$root->appendChild($xml->createTextNode("\n "));
$root->appendChild($xml->createElement('hello', 'world'));
$root->appendChild($xml->createTextNode("\n "));
$root->appendChild($xml->createElement('answer', '42'));
$root->appendChild($xml->createTextNode("\n "));
$root->appendChild($xml->createElement('danger', 'danger'));
$root->appendChild($xml->createTextNode("\n"));
$xml->save('php://output');
The output then is:
<?xml version="1.0"?>
<root>
<hello>world</hello>
<answer>42</answer>
<danger>danger</danger>
</root>
In a nutshell: creating a xml document with PHP DOMDocument(). Need to add a line to the document.
Successfully creating an XML document with:
$doc = new DOMDocument();
$doc->formatOutput = true;
$r = $doc->createElement( "products" );
$doc->appendChild( $r );
while ( $row = mysql_fetch_array($res) )
{
$b = $doc->createElement( "product" );
//adding child elements.....
}
echo $doc->saveXML();
$doc->save("write.xml")
However, at the top of the xml document I need to link to an xls.
<?xml-stylesheet type="text/xsl" href="my.xsl"?>
How do I add that line in the PHP, to the dynamically generated xml?
Thanks.
If you check the manual for DOMDocument, there is actually an example to do exactly what you need in the createProcessingInstruction method, # http://www.php.net/manual/en/domdocument.createprocessinginstruction.php