I just wanted to ask how I can insert a new node in an XML using PHP. my XML file (questions.xml) is given below
<?xml version="1.0" encoding="UTF-8"?>
<Quiz>
<topic text="Preparation for Exam">
<subtopic text="Science" />
<subtopic text="Maths" />
<subtopic text="english" />
</topic>
</Quiz>
I want to add a new "subtopic" with the "text" attribute, that is "geography". How can I do this using PHP? Thanks in advance though.
well my code is
<?php
$xmldoc = new DOMDocument();
$xmldoc->load('questions.xml');
$root = $xmldoc->firstChild;
$newElement = $xmldoc->createElement('subtopic');
$root->appendChild($newElement);
// $newText = $xmldoc->createTextNode('geology');
// $newElement->appendChild($newText);
$xmldoc->save('questions.xml');
?>
I'd use SimpleXML for this. It would look somehow like this:
// Open and parse the XML file
$xml = simplexml_load_file("questions.xml");
// Create a child in the first topic node
$child = $xml->topic[0]->addChild("subtopic");
// Add the text attribute
$child->addAttribute("text", "geography");
You can either display the new XML code with echo or store it in a file.
// Display the new XML code
echo $xml->asXML();
// Store new XML code in questions.xml
$xml->asXML("questions.xml");
The best and safe way is to load your XML document into a PHP DOMDocument object, and then go to your desired node, add a child, and finally save the new version of the XML into a file.
Take a look at the documentation : DOMDocument
Example of code:
// open and load a XML file
$dom = new DomDocument();
$dom->load('your_file.xml');
// Apply some modification
$specificNode = $dom->getElementsByTagName('node_to_catch');
$newSubTopic = $xmldoc->createElement('subtopic');
$newSubTopicText = $xmldoc->createTextNode('geography');
$newSubTopic->appendChild($newSubTopicText);
$specificNode->appendChild($newSubTopic);
// Save the new version of the file
$dom->save('your_file_v2.xml');
You can use PHP's Simple XML. You have to read the file content, add the node with Simple XML and write the content back.
Related
I have the xml below
<?xml version="1.0" encoding="UTF-8"?>
<!--Sample XML file generated by XMLSpy v2013 (http://www.altova.com)-->
<ftc:FATCA_OECD xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ftc="urn:oecd:ties:fatca:v2" xmlns:sfa="urn:oecd:ties:stffatcatypes:v2" version="2.0" xsi:schemaLocation="urn:oecd:ties:fatca:v2 FatcaXML_v2.0.xsd">
<ftc:MessageSpec>
<sfa:SendingCompanyIN>S519K4.99999.SL.392</sfa:SendingCompanyIN>
<sfa:TransmittingCountry>JP</sfa:TransmittingCountry>
<sfa:ReceivingCountry>US</sfa:ReceivingCountry>
<sfa:MessageType>FATCA</sfa:MessageType>
<sfa:MessageRefId>DBA6455E-8454-47D9-914B-FEE48E4EF3AA</sfa:MessageRefId>
<sfa:ReportingPeriod>2016-12-31</sfa:ReportingPeriod>
<sfa:Timestamp>2017-01-17T09:30:47Z</sfa:Timestamp>
<ftc:SendingCompanyIN>testing</ftc:SendingCompanyIN></ftc:MessageSpec>
<ftc:FATCA>
<ftc:ReportingFI>
<sfa:ResCountryCode>JP</sfa:ResCountryCode>
<sfa:TIN>S519K4.99999.SL.392</sfa:TIN>
<sfa:Name>Bank of NN</sfa:Name>
<sfa:Address>
<sfa:CountryCode>JP</sfa:CountryCode>
<sfa:AddressFree>123 Main Street</sfa:AddressFree>
</sfa:Address>
<ftc:DocSpec>
<ftc:DocTypeIndic>FATCA1</ftc:DocTypeIndic>
<ftc:DocRefId>S519K4.99999.SL.392.50B80D2D-79DA-4AFD-8148-F06480FFDEB5</ftc:DocRefId>
</ftc:DocSpec>
</ftc:ReportingFI>
<ftc:ReportingGroup>
<ftc:NilReport>
<ftc:DocSpec>
<ftc:DocTypeIndic>FATCA1</ftc:DocTypeIndic>
<ftc:DocRefId>S519K4.99999.SL.392.CE54CA78-7C31-4EC2-B73C-E387C314F426</ftc:DocRefId>
</ftc:DocSpec>
<ftc:NoAccountToReport>yes</ftc:NoAccountToReport>
</ftc:NilReport>
</ftc:ReportingGroup>
</ftc:FATCA>
</ftc:FATCA_OECD>
I want to change node value, sfa:TIN and save the xml in a new file. How can this be accomplished in PHP? I got examples but none used namespaces.
One way you could do this is using DOMDocument and DOMXPath and find your elements using for example an xpath expression which will find the 'TIN' elements in the sfa namespace.
/ftc:FATCA_OECD/ftc:FATCA/ftc:ReportingFI/sfa:TIN
To update the value of the first found elemement you could take the first item from the DOMNodeList which is returned by query.
$doc = new DOMDocument();
$doc->loadXML($data);
$xpath = new DOMXPath($doc);
$res = $xpath->query("/ftc:FATCA_OECD/ftc:FATCA/ftc:ReportingFI/sfa:TIN");
if ($res->length > 0) {
$res[0]->nodeValue = "test";
}
$doc->save("yourfilename.xml");
Demo
You can use the following solution, using DOMDocument::getElementsByTagNameNS:
<?php
$dom = new DOMDocument();
$dom->load('old-file.xml');
//get all TIN nodes.
$nodesTIN = $dom->getElementsByTagNameNS('urn:oecd:ties:stffatcatypes:v2', 'TIN');
//check for existing TIN node.
if (count($nodesTIN) === 1) {
//update the first TIN node.
$nodesTIN->item(0)->nodeValue = 'NEWVALUE_OF_TIN';
}
//save the file to a new one.
$dom->save('new-file.xml');
I'm in the process of writing an XML file:
<?php
$xml2 = "currenttest";
$xml = new DOMDocument("1.0");
$root = $xml->createElement ('tv');
$xml->appendChild($root);
$root->appendChild($xml->createTextNode("\n"));
$root->appendChild($xml->createTextNode($xml2));
$root->appendChild($xml->createTextNode("\n"));
$xml->save('epg.xml');
XML:
<?xml version="1.0"?>
<tv>
test
</tv>
If i change the text and again runs the code, the old content is deleted.
And I want the old text to stay.
Let's say this:
<?xml version="1.0"?>
<tv>
currenttest...
newtest...
</tv>
My previous way was to write the XML with:
file_put_contents($file, $xml2, FILE_APPEND | LOCK_EX);
FILE_APPEND | LOCK_EX, its helped me that the previous text would not be erased
I found a solution in another post:
$doc->loadXML(file_get_contents('epg.xml'));
foreach($doc->getElementsByTagName('***') as $node)
{
}
But how can it fit into my code?
You have nothing particular to do, just to reload your xml string and to append a new text node to your root element:
// your previous code (I only changed the variable names and added a default encoding)
$text = "currenttest";
$dom = new DOMDocument("1.0", "UTF-8");
$root = $dom->createElement('tv');
$dom->appendChild($root);
$root->appendChild($dom->createTextNode("\n"));
$root->appendChild($dom->createTextNode($text));
$root->appendChild($dom->createTextNode("\n"));
$xml = $dom->saveXML();
// let's add a new element
$newtext = 'newtext';
$dom = new DOMDocument;
$dom->loadXML($xml);
$root = $dom->documentElement; // conveniant way to target the root element
// but you can also write:
//$root = $dom->getElementsByTagName('tv')->item(0);
$root->appendChild($dom->createTextNode($newtext));
$newxml = $dom->saveXML();
echo $newxml;
demo
About $doc->loadXML(file_get_contents('epg.xml'));, note that you don't need to use file_get_contents since DOMDocument has already two methods:
DOMDocument::loadXML that loads the xml content from a string.
DOMDocument::load that loads the xml content directly from a file.
In addition to DOMNode::appendChild that adds a node to an element after all the children nodes of this element, you have also DOMNode::insertBefore to add a node to an element before the child node of your choice.
I tryed the code on top, 'cause i was overwriting my data, but when I coded in my application, it didn't worked cause I was trying to add the new node data in the loaded xml, you have to create a root to add data inside.
$xml = new DOMDocument("1.0", "UTF-8");
//an tag root must be first thing to add
$root = $xml->createElement('root');
$xml->appendChild($root);
Then, just add the data when you need
$xml = new DOMDocument("1.0", "UTF-8");
$xml->load($sFilepath);
$root = $xml->getElementsByTagName('root')->item(0);
your structure must looks like this:
<xml version="1.0" encoding="UTF-8">
<root>
</root>
The answer on top is totally correct. This answer is only to help if somebody is having trouble to understand.
I want to create dynamic tags in XML using PHP
like this : <wsse:Username>fqsuser01</wsse:Username>
the main thing is that I want the tags will change the value inside ---> "wsse"
(like this value)
what I need to do? to create this XML file wite PHP?
Thanks,
For this purpose you can use XMLWriter for example (another option is SimpleXML). Both option are in PHP core so any third party libraries aren't needed. wsse is a namespace - more about them you can read here
I also share with you some example code:
<?php
//create a new xmlwriter object
$xml = new XMLWriter();
//using memory for string output
$xml->openMemory();
//set the indentation to true (if false all the xml will be written on one line)
$xml->setIndent(true);
//create the document tag, you can specify the version and encoding here
$xml->startDocument();
//Create an element
$xml->startElement("root");
//Write to the element
$xml->writeElement("r1:id", "1");
$xml->writeElement("r2:id", "2");
$xml->writeElement("r3:id", "3");
$xml->endElement(); //End the element
//output the xml
echo $xml->outputMemory();
?>
Result:
<?xml version="1.0"?>
<root>
<r1:id>1</r1:id>
<r2:id>2</r2:id>
<r3:id>3</r3:id>
</root>
You could use a string and convert it to XML using simplexml_load_string(). The string must be well formed.
<?php
$usernames= array(
'username01',
'username02',
'username03'
);
$xml_string = '<wsse:Usernames>';
foreach($usernames as $username ){
$xml_string .= "<wsse:Username>$username</wsse:Username>";
}
$xml_string .= '</wsse:Usernames>';
$note=
<<<XML
$xml_string
XML; //backspace this line all the way to the left
$xml=simplexml_load_string($note);
?>
If you wanted to be able to change the namespaces on each XML element you would do something very similar to what is shown above. (Form a string with dynamic namespaces)
The XML portion that I instructed you to backspace all of the way has weird behavior. See https://www.w3schools.com/php/func_simplexml_load_string.asp for an example that you can copy & paste.
My project is to use CKEditor and create a plugin to create chart inside the page which will display the result
(in CKEditor just an img will appear when you use the plugin).
The plugin is already created,
when you use it, XML with the value and attribute needed is created inside CKEditor.
So the XML for the chart exist with writing text (format as <p> by CKEditor).
When you save inside the CKEditor, the XML and the text as HTML are sent to the database inside a string
(when I retrieve data from CKEditor it send a string).
Inside the database it is stored like this:
<?xml version="1.0"?>
<configuration>
<onglet pos="1" name="test">
<wysiwyg>
<code>
<p>test</p>
<p><graphique drawer="Line" interval="2" periode="semaine" titre="test" type="Relative">
<serie marqueur="Normal">
<index serial="---" type="di">3</index>
<typegroupe></typegroupe>
<intervalgroup></intervalgroup>
<periodgroup></periodgroup>
<groupverif>non</groupverif>
<unite>Kwh</unite>
<legend>test2</legend>
<color>#000000</color>
</serie>
</graphique></p>
</code>
</wysiwyg>
</onglet>
</configuration>
I get it inside a php page to displays my text and chart from CKEditor
Like this:
$test=200; //ID
$testxml=loadxml($test);
$testonglet=$testxml->onglet;
$testwysiwyg=$testonglet->wysiwyg;
$testcode=$testwysiwyg->code;
loadxml is a php function in another file:
$loadXml = THE QUERY TO RETRIEVE THE XML FROM THE DB
$reqload = mysql_fetch_array(mysql_query($loadXml));
$decode = html_entity_decode($reqload[0]);
$xml = simplexml_load_string($decode);
return $xml;
Now if I do var_dump($testcode);
I got:
object(SimpleXMLElement)#6 (1) { [0]=> string(403) "
test
4nonKwhtest2#000000
test après graph
" }
test and test après graph are just text but the 4nonKwhtest2#000000 are the XML value from the plugin chart.
I would like to parse the string to retrive the text and the XML (with his structure since I need it to create the chart with php).
I have already tested:
$testXML = Simplexml_load_string($testcode);
var_dump($testXML);
It gave me:
bool(false)
I have the same from XMLReader.
I also tested:
$dom = new DOMDocument();
$dom->loadHTML($testcode);
It gave something with the text but I couldn't retrieve my XML from it.
I don't know how to handle this anymore, it's the first time I use PHP
I hope it's more clear like this (sorry for my english).
Basically you have an XML document that contains another XML fragment as a text node.
That means you need to load the outer XML document first, read the text node and append the XML fragment to a new XML document.
Load The Outer XML / Read The Fragment:
DOMXpath::evaluate() allows to fetch nodes and values from a XML DOM using XPath expression.
$outer = new DOMDocument();
$outer->loadXml($xml);
$xpath = new DOMXPath($outer);
$innerXml = $xpath->evaluate('string(/configuration/onglet/wysiwyg/code)');
echo $innerXml;
Output:
<p>test</p>
<p><graphique drawer="Line" interval="2" periode="semaine" titre="test" type="Relative">
<serie marqueur="Normal">
<index serial="---" type="di">3</index>
<typegroupe></typegroupe>
<intervalgroup></intervalgroup>
<periodgroup></periodgroup>
<groupverif>non</groupverif>
<unite>Kwh</unite>
<legend>test2</legend>
<color>#000000</color>
</serie>
</graphique></p>
Load The XML Fragment
XML documents have a single root/document element node, so the XML in the case is a fragment. For easy reading it needs the single root node. So lets create a document with a body node and append the fragment to it:
$inner = new DOMDocument();
$inner->appendChild($inner->createElement('body'));
$fragment = $inner->createDocumentFragment();
$fragment->appendXml($innerXml);
$inner->documentElement->appendChild($fragment);
echo $inner->saveXml();
Output:
<?xml version="1.0"?>
<body>
<p>test</p>
<p><graphique drawer="Line" interval="2" periode="semaine" titre="test" type="Relative">
<serie marqueur="Normal">
<index serial="---" type="di">3</index>
<typegroupe></typegroupe>
<intervalgroup></intervalgroup>
<periodgroup></periodgroup>
<groupverif>non</groupverif>
<unite>Kwh</unite>
<legend>test2</legend>
<color>#000000</color>
</serie>
</graphique></p>
</body>
The element name doesn't matter, but body fits the p elements.
Read Data From The New Document
Now it is possible to create an DOMXPath instance for the document and fetch data from it.
$xpath = new DOMXPath($inner);
foreach ($xpath->evaluate('//graphique') as $graphique) {
var_dump(
[
'drawer' => $graphique->getAttribute('drawer'),
'serie-color' => $xpath->evaluate('string(serie/color)', $graphique)
]
);
}
Output:
array(2) {
["drawer"]=>
string(4) "Line"
["serie-color"]=>
string(7) "#000000"
}
I am trying to write a code where it will find a specific element in my XML file and then change the value of the text node. The XML file has different namespaces. Till now, I have managed to register the namespaces and also echo the text node of the element, which I want to change.
<?php
$xml = simplexml_load_file('getobs.xml');
$xml->registerXPathNamespace('g','http://www.opengis.net/gml');
$result = $xml->xpath('//g:beginPosition');
foreach ($result as $title) {
echo $title . "\n";
}
?>
My question is: How can I change the value of this element using SimpleXML? I tried to use the nodeValue command but I am not able to make it work.
This is a part of the XML:
<sos:GetObservation xmlns:sos="http://www.opengis.net/sos/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" service="SOS" version="1.0.0" srsName="urn:ogc:def:crs:EPSG:4326">
<sos:offering>urn:gfz:cawa:def:offering:meteorology</sos:offering>
<sos:eventTime>
<ogc:TM_During xmlns:ogc="http://www.opengis.net/ogc" xsi:type="ogc:BinaryTemporalOpType">
<ogc:PropertyName>urn:ogc:data:time:iso8601</ogc:PropertyName>
<gml:TimePeriod xmlns:gml="http://www.opengis.net/gml">
<gml:beginPosition>2011-02-10T01:10:00.000</gml:beginPosition>
Thanks
Dimitris
In the end I managed to do it by using the PHP XML DOM.
Here is the code that I used in order to change the text node of a specific element:
<?php
// create new DOM document and load the data
$dom = new DOMDocument;
$dom->load('getobs.xml');
//var_dump($dom);
// Create new xpath and register the namespace
$xpath = new DOMXPath($dom);
$xpath->registerNamespace('g','http://www.opengis.net/gml');
// query the result amd change the value to the new date
$result = $xpath->query("//g:beginPosition");
$result->item(0)->nodeValue = 'sds';
// save the values in a new xml
file_put_contents('test.xml',$dom->saveXML());
?>
Not wanting to switch from the code I've already made for SimpleXML, I found this solution:
http://www.dotdragnet.com/forum/index.php?topic=3979.0
Specificially:
$numvotes = $xml->xpath('/gallery/image[path="'.$_GET["image"].'"]/numvotes');
...
$numvotes[0][0] = $votes;
Hope this helps!