กำจัดคำหยุดออก หลังจากตรวจสอบพบคำนามแล้ว แต่ยังมีคำนามบางคำที่เปนคำหยุด

<?php
		require_once("config.php");
		require_once("fn_pos.php");
		
		$fileType = $_POST['filetype'];
		$db = dbCon();
		$num = 1;
		$sql = "SELECT * FROM word_pos WHERE category='$fileType' ORDER BY word_count DESC";
		$result=mysql_query($sql, $db);
		if (!$result) print ($sql." could not be processed.");
		while($table  = mysql_fetch_array($result)){
			$word = $table['word'];
			$word_count = $table['word_count'];
			$num_file = $table['num_file'];
			$category = $table['category'];
			$pos = $table['pos'];
			$noun1=ereg("^(noun)", "$pos");
			$noun2=ereg("(,noun)$", "$pos");
			/*
			echo "word=$word<br>";
			echo "pos=$pos<br>";
			echo "noun1=$noun1<br>";
			echo "noun2=$noun2<br>";
			echo "*********************<br>";*/
			
			if(($noun1 == 1) || ($noun2 == 1)){
				$sql = "SELECT * FROM stopword WHERE word='$word' AND category = '$category'";
				$result2=mysql_query($sql, $db);
				$row = mysql_num_rows($result2);
				if($row == 0){
					$sql = "INSERT INTO stopword(stopword_id, word, word_count, num_file, pos, category) values('','$word','$word_count','$num_file','$pos','$category')";
					$result3=mysql_query($sql, $db);
	 			}else{
					$sql = "UPDATE stopword SET word_count='$word_count', num_file='$num_file' WHERE word = '$word' AND category = '$fileType'";
					$result4=mysql_query($sql, $db);
				}
		?>