Rick Fletcher wrote:
Daniel Schierbeck wrote:
I am having some problems with the XML features (I use the fancy new
SimpleXML). It works like a dream when I'm retrieving information from
an XML document, but when I want to insert new tags it screws up. I'm
trying to create a function that saves error logs in an XML file,
which should look like this:
<?xml version='1.0' standalone='yes'?>
<errors>
<error>
<number>2</number>
<string>Could not bla bla</string>
<file>filename.php</file>
<line>56</line>
</error>
<error>
<number>1</number>
<string>Failed to bla bla</string>
<file>filename2.php</file>
<line>123</line>
</error>
</errors>
I tried to use SimpleXML myself and had some strange behavior, so I
ended up switching to DOM. I was already basically familiar with DOM
anyway from javascript so development went quickly. You should take a
look: http://www.php.net/dom
There's more than one way to do it, of course, but code to add an
element to this tree could look something like this:
<?php
// load the existing tree
$doc = new DOMDocument();
$doc->load( "errors.xml" );
// count the number of existing "error" nodes
$errors_node = $doc->documentElement;
$error_count = $errors_node->getElementsByTagName( "error" )->length;
// create the new "error" node...
$error_node = $doc->createElement( "error" );
// ...and its children
$number_node = $doc->createElement( "number", $error_count + 1 );
$string_node = $doc->createElement( "string", "New error message" );
$file_node = $doc->createElement( "file", "foo.php" );
$line_node = $doc->createElement( "line", "32" );
// add the children to the error node
$error_node->appendChild( $number_node );
$error_node->appendChild( $string_node );
$error_node->appendChild( $file_node );
$error_node->appendChild( $line_node );
// add the new "error" node to the tree
$doc->documentElement->appendChild( $error_node );
// save back to the file
$doc->save( "errors.xml" );
?>
-- Rick
Thanks, that looks promising! It would be slick if SimpleXML could
handle that type of insertion, but i guess you can't get everything, eh?
Best regards, Daniel
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