Uninitialized string offset: 0

[Albert Padley <apadley@xxxxxxxxxxx>]

I have the following class that generates a Notice: Uninitialized  
string offset: 0 each time it is called. The lines generating the  
notice are marked. How do I fix this?

class InputFilter {
	var $tagsArray;
	var $attrArray;
	var $tagsMethod;
	var $attrMethod;
	var $xssAuto;
	var $tagBlacklist = array('applet', 'body', 'bgsound', 'base',  
'basefont', 'embed', 'frame', 'frameset', 'head', 'html', 'id',  
'iframe', 'ilayer', 'layer', 'link', 'meta', 'name', 'object',  
'script', 'style', 'title', 'xml');
	var $attrBlacklist = array('action', 'background', 'codebase',  
'dynsrc', 'lowsrc');
	function inputFilter($tagsArray = array(), $attrArray = array(),  
$tagsMethod = 0, $attrMethod = 0, $xssAuto = 1) {		
		for ($i = 0; $i < count($tagsArray); $i++) $tagsArray[$i] =  
strtolower($tagsArray[$i]); //<< Notice Generated Here
		for ($i = 0; $i < count($attrArray); $i++) $attrArray[$i] =  
strtolower($attrArray[$i]); //<< Notice Generated Here also
		$this->tagsArray = (array) $tagsArray;
		$this->attrArray = (array) $attrArray;
		$this->tagsMethod = $tagsMethod;
		$this->attrMethod = $attrMethod;
		$this->xssAuto = $xssAuto;
	}
}

TIA.

Al Padley

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