PHP reads and writes XML, php reads and writes xml_PHP tutorial

PHP reads and writes XML, php reads and writes xml

What is XML?
XML is a data storage format. It does not define what data is saved, nor does it define the format of the data. XML simply defines tags and the attributes of those tags. Well-formed XML markup looks like this:

Copy code The code is as follows:

<name>Jack Herrington</name>

DOM reading XML

Copy code The code is as follows:

<?php
$doc = new DOMDocument();
$doc->load( 'books.xml' );

$books = $doc->getElementsByTagName( "book" );
foreach( $books as $book )
{
$authors = $book->getElementsByTagName( "author" );
$author = $authors->item(0)->nodeValue;

$publishers = $book->getElementsByTagName( "publisher" );
$publisher = $publishers->item(0)->nodeValue;

$titles = $book->getElementsByTagName( "title" );
$title = $titles->item(0)->nodeValue;

echo "$title - $author - $publishern";
}
?>

Write XML using DOM

Copy code The code is as follows:

<?php
$books = array();
$books [] = array(
'title' => 'PHP Hacks',
'author' => 'Jack Herrington',
);
$doc = new DOMDocument(); //Create dom object
$doc->formatOutput = true;

$r = $doc->createElement( "books" );//Create tag
$doc->appendChild( $r ); //Add the $r tag to the xml format.

foreach( $books as $book )
{
$b = $doc->createElement( "book" ); //Create tag
$author = $doc->createElement( "author" );
$author->appendChild($doc->createTextNode( $book['author'] )); //Add content to the tag
                                                                                     
       
                                                                                                                     
}
       
echo $doc->saveXML();
?>

The above is the two pieces of DOM code for reading and writing XML. Do you guys understand it? If you have any questions, you can leave me a message

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