Validate XML from Post

evdawg80

Stuck. Is this even possible? I'm trying to figure out a way for someone to upload an xml file via a PHP upload form and have the script run through the XML file and look for errors and spit them out (if any).

big_nerd

evdawg80,

What kind of errors are you looking to trap?

There are MANY freely available classes for parsing XML, however you would need to explain what you are looking to validate?

Do you wish to validate it for VALID XML Syntax, or validate specific nodes/child nodes existance / data?

I found this class. You can try it out, it takes XML and puts it into an associative array, and vice versa.

You could use this to read the user-uploaded XML file, validate the data however you need, and spit out errors.

I hope this is of some help!

evdawg80

Well, one of the fields would be for a finance term. Lets say that the contract has a max term of 84. Anything over 84 should spit out an error saying, "nothing over 84" or something like that.

NogDog

If running PHP5, take a look at the [man]SimpleXML[/man] functions.

big_nerd

Agreed this would be the simplest method.

However if you are using an exterior webhost who won't install any exts for you, or not running php5, then the class I showed you would work.

I would try to get your feet wet with the class I had linked, its VERY basic, but it may work.

<?php
$xmlArray = &new assoc_array2xml;
$xmlfile = "my_uploaded_file.xml";

$x_array = $xmlArray->xml2array($xmlfile);

printf("<pre>%s</pre>",print_r($x_array,true));

?>

This (should) give you an output of the array form. I would use a properly formatted XML file for starters. You will be able to pull data from this xml file and validate just like you would any other php array.

I'm @ work so I can't test anything, so I have no idea if it works, but this should get you started. If you are unfamiliar with OOP, there are tutorials on this site (phpbuilder.com).