I have the following XML
<cds>
<record>
<id>1</id>
<artist>Rammstein</artist>
<album>random</album>
<trackNumbers>11</trackNumbers>
</record>
<record>
<id>2</id>
<artist>Rammstein</artist>
<album>random</album>
<trackNumbers>18</trackNumbers>
</record>
</cds>
I want to delete the record by the identifiier "ID" that I pass from another php file. So if I am not wrong I need the position of the record node to remove that node.
$xml=simplexml_load_file("books.xml") or die("Error: Cannot create object");
unset($xml->record[x]); // x should be the id passed
Is this achievable? I've been trying to obtain this I am not able to find the solution.
first select the <record> with xpath(), then delete it:
$xml = simplexml_load_string($x); // assume XML in $x
$record = $xml->xpath("/cds/record[id='2']")[0];
This will store the first result (index = 0) of that xpath "query" in $record. It will be a record-node with id = 2. Note that PHP >= 5.4 is needed to do array dereferencing.
Now use unset:
unset($record[0]);
See the changes:
echo $xml->asXML();
Related
I have the following XML file:
<?xml version="1.0" encoding="UTF-8"?>
<root>
<person>
<id>1</id>
<name>Jane</name>
<surname>Smith</surname>
</person>
<person>
<id>2</id>
<name>John</name>
<surname>Doe</surname>
</person>
</root>
And I have the following CSV file:
id;phone
1;12345678
2;78903456
I work with PHP. I need to do with XML something like this:
Add a phone number element to the person where id is...
For example: Add a phone element with value 12345678 to the person element with id 1.
As the content of the XML will vary, it will probably be easier to XPath to find the entry you want to update...
$telephoneList = [["id"=> 1, "phone" => "12345678"],
["id"=> 2, "phone" => "78903456"]];
$xml = simplexml_load_file("a.xml");
foreach ( $telephoneList as $telephone) {
$person = $xml->xpath("//person[id={$telephone['id']}]");
if ( count($person) == 1 ) {
$person[0]->addChild("phone", $telephone['phone']);
}
}
echo $xml->asXML();
This tries to find the <person> element with an <id> with the value from the csv. If this is found, it will add in the phone number using addChild()
It's just a case of reading in the CSV file and process it as above.
With SimpleXML, you can use the addChild() method.
$file = 'xml/config.xml';
$xml = simplexml_load_file($file);
$galleries = $xml->galleries;
$gallery = $galleries->addChild('gallery');
$gallery->addChild('name', 'a gallery');
$gallery->addChild('filepath', 'path/to/gallery');
$gallery->addChild('thumb', 'mythumb.jpg');
$xml->asXML($file);
Be aware that SimpleXML will not "format" the XML for you, however going from an unformatted SimpleXML representation to neatly indented XML is not a complicated step and is covered in lots of questions here.
You can loop the $xml->children() from the SimpleXMLElement and then check if for (string)$a->id === "1". Then use addChild to add your phone element with value 12345678 to the person element.
foreach ($xml->children() as $a) {
if ((string)$a->id === "1") {
$a->addChild("phone", "12345678");
}
}
Demo
I have the following example XML document:
<?xml version="1.0" encoding="UTF-8" ?>
<database>
<record>
<id>1</id>
<a>5</a>
</record>
<record>
<id>5</id>
<a>8</a>
</record>
<record>
<id>7</id>
<!--No a record!-->
</record>
<record>
<id>6</id>
<a>10</a>
</record>
</database>
I want to iterate through each "record" element and fetch it's corresponding "a" element if it exists.
I attempted this using the following code:
$xml = new SimpleXMLElement($xmlStringDataFromFile);
foreach ($xml->record as $record) {
$id = $record->xpath("//id")[0];
$a = $record->xpath("//a")[0];
echo "{$id}: {$a}\n";
}
However the xpath performed is on the entire document. not on the individual "record" element. Thus I got the following output:
1: 5
1: 5
1: 5
1: 5
I want the following output:
1: 5
5: 8
7:
6: 10
How do I do this?
When you use // at the beginning of the XPath expression it will search from the document root and you always end up with the same result. Since the id and a elements are directly under record simply use
$id = $record->xpath("id")[0];
$a = $record->xpath("a")[0];
If they would be at same level below record start the XPath expression with a . to search relative to the context node:
$id = $record->xpath(".//id")[0];
$a = $record->xpath(".//a")[0];
I have xml like:
<root xmlns="urn:test:apis:baseComponents">
<books>
<book>
<name>50 shades of grey</name>
</book>
</books>
<disks>
<disk>
<name>Britney Spears</name>
</disk>
</disks>
</root>
And such php code:
$xml = new SimpleXMLElement($xml);
$books = $xml->books;
$disks = $xml->disks;
$disks->registerXPathNamespace('x', 'urn:test:apis:baseComponents');
$books->registerXPathNamespace('x', 'urn:test:apis:baseComponents');
$b_names = $books->xpath('//x:name');
b_names contains array with 2 values instead of 1. First holds books->book->name, second holds disks->disk->name.
Can you please explain what am I doing wrong and how could I find children of only one element?
The reason that I am using xpath instead of taking manually values using SimpleXMLElement, is that I don't know what value, which I want to search in advance.
Use $books->xpath('.//x:name') to search descendants of your $books variable and not descendants of the root node/document node (which the path //x:name does).
If I have the following structure in an XML File;
<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:pain.008.001.02" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<CstmrDrctDbtInitn>
<GrpHdr>
<MsgID>rBYEqfjzEU</MsgID>
<CreDtTm>2014-07-01T12:36:15</CreDtTm>
<NbOfTxs>2</NbOfTxs>
<CtrlSum>400.4</CtrlSum>
<InitgPty>
<Id>
<PrvtId>
<Othr>
<Id>IA1234567</Id>
</Othr>
</PrvtId>
</Id>
</InitgPty>
</GrpHdr>
</CstmrDrctDbtInitn>
</Document>
The above code represents one transaction between the <CstmrDrctDbtInitn> and <\CstmrDrctDbtInitn> tags. This file will be appended to include more transactions which will all start and end with a <CstmrDrctDbtInitn> and <\CstmrDrctDbtInitn> tags. I need to count the number of transactions in the file, so i basically need to count the number of <CstmrDrctDbtInitn> tags in the file. Any suggestions? Sorry if I am explaining this badly, confused!
I altered the following PHP code as suggested but no luck :(
$filename = date('Y-W').'.xml'; //2014-26.xml
//Check if a file exists
if (file_exists($filename))
{
$dom = simplexml_load_string($xml);
global $NumberTransactions;
$NumberTransactions = count($dom->CstmrDrctDbtInitn);
// call xml appendFile function
appendFile($filename);
}
else
{
// call xml createFile function
createFile($filename);
}
Assuming you mean to count the number of child nodes under GrpHdr - you could use SimpleXML:
$xml = '<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:pain.008.001.02" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<CstmrDrctDbtInitn>
<GrpHdr>
<MsgID>rBYEqfjzEU</MsgID>
<CreDtTm>2014-07-01T12:36:15</CreDtTm>
<NbOfTxs>2</NbOfTxs>
<CtrlSum>400.4</CtrlSum>
<InitgPty>
<Id>
<PrvtId>
<Othr>
<Id>IA1234567</Id>
</Othr>
</PrvtId>
</Id>
</InitgPty>
</GrpHdr>
</CstmrDrctDbtInitn>
</Document>';
$dom = simplexml_load_string($xml);
// var_dump($dom->CstmrDrctDbtInitn->GrpHdr);
echo count($dom->CstmrDrctDbtInitn->GrpHdr->children());
If you meant a variation you should be able to get a good clue of the structure by uncommenting that var_dump line and working through the object structure.
If you meant something else - give us a clue by telling us in detail what you wanted the count value to be based on your example data.
===================== UPDATED FOLLOWING CLARIFICATION BELOW=============
To count the number of CstmrDrctDbtInitn groups you can use the original example, but instead the count line would be:
echo count($dom->CstmrDrctDbtInitn);
DOMXpath::evaluate() can use Xpath to count the nodes.
// create and load
$dom= new DOMDocument();
$dom->loadXml($xml);
$xpath = new DOMXpath($dom);
// register an alias/prefix for the namespace
$xpath->registerNamespace('iso', 'urn:iso:std:iso:20022:tech:xsd:pain.008.001.02');
// get the count
var_dump($xpath->evaluate('count(//iso:CstmrDrctDbtInitn)'));
Demo: https://eval.in/169122
I was tesing with a simple example of how to display XML in browser using PHP and found this example which works good
<?php
$xml = new DOMDocument("1.0");
$root = $xml->createElement("data");
$xml->appendChild($root);
$id = $xml->createElement("id");
$idText = $xml->createTextNode('1');
$id->appendChild($idText);
$title = $xml->createElement("title");
$titleText = $xml->createTextNode('Valid');
$title->appendChild($titleText);
$book = $xml->createElement("book");
$book->appendChild($id);
$book->appendChild($title);
$root->appendChild($book);
$xml->formatOutput = true;
echo "<xmp>". $xml->saveXML() ."</xmp>";
$xml->save("mybooks.xml") or die("Error");
?>
It produces the following output:
<?xml version="1.0"?>
<data>
<book>
<id>1</id>
<title>Valid</title>
</book>
</data>
Now I have got two questions regarding how the output should look like.
The first line in the xml file '', should not be displayed, that is it should be hidden
How can I display the TextNode in the next line. In total I am exepecting an output in this fashion
<data>
<book>
<id>1</id>
<title>
Valid
</title>
</book>
</data>
Is that possible to get the desired output, if so how can I accomplish that.
Thanks
To skip the XML declaration you can use the result of saveXML on the root node:
$xml_content = $xml->saveXML($root);
file_put_contents("mybooks.xml", $xml_content) or die("cannot save XML");
Please note that saveXML(node) has a different output from saveXML().
First question:
here is my post where all usable threads with answers are listed: How do you exclude the XML prolog from output?
Second question:
I don't know of any PHP function that outputs text nodes like that.
You could:
read xml using DomDocument and save each node as string
iterate trough nodes
detect text nodes and add new lines to xml string manually
At the end you would have the same XML with text node values in new line:
<node>
some text data
</node>