文件：db.config.smarty.php
这个文件主要是用于数据库配置
1 <?php 2 $db = array( 3 'host'=>'localhost', 4 'user'=>'root', 5 'password'=>'********', 6 'database'=>'test', 7 ) 8 ?>
文件：db.conn.smarty.php
这个文件用于数据库操作，查询，删除，更新，添加。
要引用配置文件：require_once('db.config.smarty.php');
1 <?php 2 class db { 3 public $conn; 4 public static $sql; 5 public static $instance=null; 6 private function __construct(){ 7 require_once('db.config.smarty.php'); 8 $this->conn = mysql_connect($db['host'],$db['user'],$db['password']); 9 if(!mysql_select_db($db['database'],$this->conn)){ 10 echo "失败"; 11 }; 12 mysql_query('set names utf8',$this->conn); 13 } 14 public static function getInstance(){ 15 if(is_null(self::$instance)){ 16 self::$instance = new db; 17 } 18 return self::$instance; 19 } 20 /** 21 * 查询数据库 22 */ 23 public function select($table,$condition=array(),$field = array()){ 24 $where=''; 25 if(!empty($condition)){ 26 27 foreach($condition as $k=>$v){ 28 $where.=$k."='".$v."' and "; 29 } 30 $where='where '.$where .'1=1'; 31 } 32 $fieldstr = ''; 33 if(!empty($field)){ 34 35 foreach($field as $k=>$v){ 36 $fieldstr.= $v.','; 37 } 38 $fieldstr = rtrim($fieldstr,','); 39 }else{ 40 $fieldstr = '*'; 41 } 42 self::$sql = "select {$fieldstr} from {$table} {$where}"; 43 $result=mysql_query(self::$sql,$this->conn); 44 $resuleRow = array(); 45 $i = 0; 46 while($row=mysql_fetch_assoc($result)){ 47 foreach($row as $k=>$v){ 48 $resuleRow[$i][$k] = $v; 49 } 50 $i++; 51 } 52 return $resuleRow; 53 } 54 /** 55 * 添加一条记录 56 */ 57 public function insert($table,$data){ 58 $values = ''; 59 $datas = ''; 60 foreach($data as $k=>$v){ 61 $values.=$k.','; 62 $datas.="'$v'".','; 63 } 64 $values = rtrim($values,','); 65 $datas = rtrim($datas,','); 66 self::$sql = "INSERT INTO {$table} ({$values}) VALUES ({$datas})"; 67 if(mysql_query(self::$sql)){ 68 return mysql_insert_id(); 69 }else{ 70 return false; 71 }; 72 } 73 /** 74 * 修改一记录 75 */ 76 public function update($table,$data,$condition=array()){ 77 $where=''; 78 if(!empty($condition)){ 79 80 foreach($condition as $k=>$v){ 81 $where.=$k."='".$v."' and "; 82 } 83 $where='where '.$where .'1=1'; 84 } 85 $updatastr = ''; 86 if(!empty($data)){ 87 foreach($data as $k=>$v){ 88 $updatastr.= $k."='".$v."',"; 89 } 90 $updatastr = 'set '.rtrim($updatastr,','); 91 } 92 self::$sql = "update {$table} {$updatastr} {$where}"; 93 return mysql_query(self::$sql); 94 } 95 /** 96 * 删除记录 97 */ 98 public function delete($table,$condition){ 99 $where=''; 100 if(!empty($condition)){ 101 102 foreach($condition as $k=>$v){ 103 $where.=$k."='".$v."' and "; 104 } 105 $where='where '.$where .'1=1'; 106 } 107 self::$sql = "delete from {$table} {$where}"; 108 return mysql_query(self::$sql); 109 110 } 111 112 public static function getLastSql(){ 113 echo self::$sql; 114 } 115 } 116 ?>
其他文件要操作数据的时候只要引用 require_once 'db.conn.smarty.php';就可以了。
0 //require_once 'db.conn.smarty.php';
0 //$db = db::getInstance();
1 //$arr = array(9 => 'Tennis', 3 => 'Swimming', 8 => 'Coding'); 2 //$arr = $db->select('demo',array('password'=>'yujianqi2011'),array('username','age')); 3 //echo $db->insert('demo',array('name'=>'最近你啦','password'=>'123')); 4 //echo $db->update('demo',array("name"=>'xxx',"password"=>'123'),array('id'=>1)); 5 //echo $db->delete('demo',array('id'=>'2')); 6 //db::getLastSql(); 7 //echo $list;