跳至 [1] [2] [全屏预览] link,utf8); } //查找 1.表名 2.条件 3.值 如果不添加条件或者值，就全部查询 public function find($table=,$key=,$value=){ if(!$key||!$value){ $sql = select * from {$table}; }else{ $sql = select * from {$table} where {$key} = '{$value}'; } $res = mysqli_query($this -> link,$sql); $arr = mysqli_fetch_all($res,mysqli_assoc); mysqli_free_result($res); return $arr; } //增加 1.表名 2.需要插入的字段 3.值1 public function ins($table=,$zd=name,score,$value=){ $arr = explode(,,$value); $str = ; foreach($arr as $k => $v){ $str .= '.$v.'.,; } $str = rtrim($str,,); $sql = insert into {$table}({$zd})values({$str}); $res = mysqli_query($this -> link,$sql); return mysqli_insert_id($this -> link); } //修改 1.表名 2.修改字段 3.值 4.条件 5.值 public function upd($table=,$key=,$value=,$key2=,$value2=){ $sql = update {$table} set {$key}='{$value}' where {$key2}='{$value2}'; $res = mysqli_query($this -> link,$sql); return mysqli_affected_rows($this -> link); } //删除 1.表名 2.条件 3.值 public function del($table=,$key=,$value=){ $sql = delete from {$table} where {$key}='{$value}'; $res = mysqli_query($this -> link,$sql); return mysqli_affected_rows($this -> link); } //析构函数 public function __destruct(){ if(isset($res)) mysqli_free_result($res); mysqli_close($this -> link); } } $m = new model(); //var_dump($m -> find(stu,id)); var_dump($m -> ins(stu,name,zhu)); //var_dump($m -> upd(stu,name,dujianing,id,1)); //var_dump($m -> del(stu,name,li));?>