IPTC image data is garbage - how do I not display garbage?

[ppowell]

	/**
	 * Display all found IPTC information from image.  Can be called statically
	 *
	 * @access public
	 * @param mixed $fullImgPath 
	 * @return mixed HTML String from parsed array using iptcparse()
	 * @link [url]http://us2.php.net/manual/en/function.iptcparse.php#39650[/url]
	 * @see link regarding information on IPTC information 
	 * @link [url]http://www.iptc.org[/url]
	 * @see link regarding IPTC
	 */
	function &displayIPTC($fullImgPath) {   

		$size = @getimagesize($fullImgPath, $infoArray);
     		if (is_array($infoArray)) {   

       		 $iptcArray = @iptcparse($infoArray['APP13']);
       		 if (is_array($iptcArray) && @sizeof($iptcArray) > 0) 
		  foreach (@array_keys($iptcArray) as $info) for ($i = 0; $i < @sizeof($iptcArray[$info]); $i++) $html .= $info .' = ' . $iptcArray[$info][$i] . '<br>';
	        }
		return $html;
	}

This class method will extract and display any found IPTC data within an image. HOwever, there is one problem that on occasions, my IPTC data comes back as:

2#000 =
2#120 =

How can I prevent displays such as this in favor of actual, readable language-constructed IPTC data if found?

Is there a PHP version of the AEL function is_word()?

Thanx
Phil