match mit mehr als 3 zeichen

Hallo wie kann ich das machen das bei meinem code mit der suche match auch vars beachtet werden die weniger als 3 buchstaben haben ? also z.b. genau 3 buchstaben ... allerdings dann aber nicht weniger wie 3 ...

danke

Code:                   In Zwischenablage kopieren (nur IE)

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$symbole = array("?","!","'","´","`","-","=","/","(",")","#","+",",",".",";",":"); $key = str_replace($symbole, "", $key);$key = str_replace("ß", "ss", $key);$key = trim($key);include("config.inc.php");$db = mysql_connect($hostname,$username,$password);mysql_select_db($dbname);$lesen = mysql_query("select * from tab_level1 WHERE checked = '1' AND MATCH (keyword1) AGAINST ('%$key%') LIMIT 1");echo mysql_error(); while($ar=mysql_Fetch_array($lesen)) { $text = "$ar[answer1]";$pic1 = "$ar[pic1]";$website1 = "$ar[website1]";$set1 = "$ar[set1]";}1">$symbole = array("?","!","'","´","`","-","=","/","(",")","#","+",",",".",";",":");         <br/>$key = str_replace($symbole, "", $key);<br/>$key = str_replace("ß", "ss", $key);<br/>$key = trim($key);<br/><br/>include("config.inc.php");<br/>$db = mysql_connect($hostname,$username,$password);<br/>mysql_select_db($dbname);<br/><br/>$lesen = mysql_query("select * from tab_level1 WHERE checked = '1' AND MATCH (keyword1) AGAINST ('%$key%') LIMIT 1");<br/>echo mysql_error();  <br/>while($ar=mysql_Fetch_array($lesen)) { <br/><br/>$text = "$ar[answer1]";<br/>$pic1 = "$ar[pic1]";<br/>$website1 = "$ar[website1]";<br/>$set1 = "$ar[set1]";<br/><br/>}

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