這裡發一個自己寫的php搜尋的類，資料表龐大的話當然是不適合用這個的，會比較慢，但是對於很多地方還是適用的，並且查詢到的結果，其關鍵字可以高亮顯示

/*
 這是一個多關鍵字多欄位單表搜尋的類
  * 張偉2012-09-23  qq：3340971
  */
 class Search{
 	private $host='localhost';
 	private $user='root';
 	private $pwd='123456';
 	private $conn;
 	private $dbname='hshb2c_com';
 	private $charset='utf8';
 	public $tips='';//提示資訊
 	public static $limit="/[\+&\s]+/";//分割符號
 	public static $arrKey=array();
 	private static $instance;
 	public static function getInstance(){
 		if(!self::$instance instanceof self){
 			self::$instance=new self();
 		}
 		return self::$instance;
 	}
 	private function __construct(){
 		date_default_timezone_set('Asia/Shanghai');
 		$this->
 
[email protected]_connect($this->host,$this->user,$this->pwd);
 		if(!$this->conn){
 			$this->tips='資料庫連線失敗!'.mysql_error();
 			return false;
 		}
 		mysql_query("SET NAMES '{$this->charset}'");
 		mysql_query("SET CHARACTER_SET_CLIENT='{$this->charset}'");
 		mysql_query("SET CHARACTER_SET_RESULTS='{$this->charset}'");
 		
 		if(!mysql_select_db($this->dbname,$this->conn)){
 			$this->tips='不存在資料庫:'.$this->dbname.',請核對後再試!'.mysql_error();
 			return false;
 		}
 	}
 	/*執行單表查詢並返回結果（二維陣列）
 	*$str:http提交的要查詢的字串
 	*/
 
 	public function query($str,$tbname,$arrSearchField,$arrShowField){
 		$str=self::createLike($str,$arrSearchField);
 		foreach(self::$arrKey as $v){
 			$arrReplaceField[]='<font color="red">'.$v.'</font>';
 		}
 		$list_field=implode("`,`",$arrShowField);
 		$list_field="`$list_field`";
 		$sql="SELECT $list_field FROM `$tbname` WHERE $str";
 		$result=mysql_query($sql,$this->conn);
 		$num=mysql_num_rows($result);
 		$item=array();
 		$num_field=count($arrShowField);
 		if($num!=0){
 			$i=0;
 			while($row=mysql_fetch_assoc($result)){
 				for($j=0;$j<$num_field;$j++){
 					if(in_array($arrShowField[$j],$arrSearchField)){
 						$fieldValue=str_replace(self::$arrKey,$arrReplaceField,$row[$arrShowField[$j]]);
 					}else{
 						$fieldValue=$row[$arrShowField[$j]];
 					}
 					$item[$i][$arrShowField[$j]]=$fieldValue;
 				}
 				$i++;
 			}
 			return $item;
 		}else{
 			return false;
 		}
 		
 	}
 	//生成多個欄位的like查詢條件
 	public static function createLike($str,$arrSearchField){
 		self::$arrKey=preg_split(self::$limit,$str);
 		$strLike="";
 		foreach($arrSearchField as $v1){
 			foreach(self::$arrKey as $v2){
 				$strLike.="`$v1` LIKE '%$v2%' OR ";
 			}
 		}
 		return substr($strLike,0,-4);
 	}
 }