php ใช้ฟังก์ชัน explode แล้วข้อมูล string ไม่ออกตามที่ต้องการคะ

           $arr1 = array();
           $strFileName = "C:\AppServ\www\swathf\output.txt";
           $objFopen = fopen($strFileName, 'r');
   	    if ($objFopen) {
		   while (!feof($objFopen)) {
		   $contents = trim(fgets($objFopen, 4096));
		   array_push( $arr1, $contents);    
		   $no++;}}
	       fclose($objFopen);
	        
		   
		   
	              foreach ( $arr1 as $value1 ) 
			       {
		             
		     $conn = mysql_connect(localhost,root,root) or die ('Error connecting to mysql');
                      mysql_query("SET NAMES UTF8");
                      $dbname = 'newsextraction';
                      mysql_select_db($dbname);
                      $query = "SELECT nameE  FROM name_entity WHERE nameE LIKE '".trim($value1,"\t\n\r\0\x0B")."' ";
                      $result = mysql_query($query);
                      while($row = mysql_fetch_array($result))
                     {
		                 $show ="{$row['nameE']}$nbsp" ;
		 
		              //echo"$show";
					                             $competitor = explode("ต้องการ",$show);
			          echo"$competitor[0]";
	
                      }


					   
			         }