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
-- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
