[pk_validxml]

Description

Wrote this ultra-simple tag because I needed to do a quick check on data returned from several db columns, where some of the data might be serialized. The way to check if something is serialized is obviously to cast it to xml, but that will throw an error, which needs trapping. Anyway, the result is this tag :-)

Updated 2006-07-12 after remembering Johan's comment that the use of a page var will still cause problems - *now* it works :-)

Sample Usage

[
var('pseudo_serialized_data')='70

';

var('test_array')=null;

If(pk_validxml($pseudo_serialized_data));
	$test_array -> unserialize($pseudo_serialized_data);
Else;
	$test_array = $pseudo_serialized_data;
/If;

$test_array;
]

Source Code

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if: !(lasso_tagexists: 'pk_validxml');

	define_tag:'validxml', -namespace='pk_',
		-required='data',
		-description='establishes if data is valid xml';

		local('output')=false;

		if(local_defined('data'));
		
			protect;
				local('tryit') = xml:#data;
				local('result')='ok';
			/protect;

			if(local_defined('result'));
				#output = true;
			/if;

		/if;

		return(#output);

	/define_tag;

/if;

Related Tags

• xml_tree

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