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- // 配置数据库
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- define('DB_HOST', '127.0.0.1'); //服务器地址
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- define('DB_USER', 'root'); //用户名
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- define('DB_PASS', ''); //密码
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- define('DB_DATABASENAME', 'fenxiao'); //数据库
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- class Dbmysql
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- {
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-
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- /*
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- *变量
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- **/
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- private $tablename=""; //表名
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- private $fieldname="*";
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- private $conn;
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- private $where;
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- private $sql;
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-
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- function __construct($tablename)
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- {
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- //生成一个连接
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- $this->conn = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("connect failed" . mysql_error());
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- //选择数据库
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- mysql_select_db(DB_DATABASENAME, $this->conn);
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- //设置编码格式
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- mysql_query("SET NAMES utf8");
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- //var_dump($conn);
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- $this->tablename=$tablename;
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- }
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-
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- //设置sql语句
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- private function setsql($sql)
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- {
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- $this->sql=$sql;
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- }
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-
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- //设置条件语句
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- public function where($where)
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- {
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- $this->where=" where ".$where;
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-
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- return $this;
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- }
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-
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- //按指定字段
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- public function field($keyword)
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- {
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- $this->fieldname=$keyword;
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- return $this;
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- }
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- //设置连接查询表
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- public function table($table1,$table2,$field,$bool)
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- {
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- $this->tablename="$table1 LEFT JOIN $table2 ON $table1.$field$bool$table2.$field";
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- //print_r($this->tablename);
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- return $this;
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- }
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-
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- //设置多表查询
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- public function addtable($table1,$table2,$field,$bool)
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- {
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- $this->tablename.=" LEFT JOIN $table2 ON $table1.$field$bool$table2.$field";
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- //print_r($this->tablename);
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- return $this;
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- }
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-
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- //设置连接查询表
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- ##SELECT * FROM 【wx_order LEFT JOIN wx_shopcar ON wx_shopcar.oid=wx_order.oid and wx_order.uid=wx_shopcar.uid LEFT JOIN wx_goods ON wx_shopcar.gid=wx_goods.gid】 WHERE wx_order.oid=1 and wx_order.uid=3
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- public function settable($sql)
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- {
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- $this->tablename=$sql;
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- //print_r($this->tablename);
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- return $this;
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- }
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- //查询所有数据库 以数组形式输出
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- public function select()
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- {
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- /**
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- * 查询数据库中所有的数据
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- **/
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- $arr=array();
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- //执行sql语句
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- $result = mysql_query("select ".$this->fieldname." from ".$this->tablename.$this->where, $this->conn);
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-
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- while ($row = mysql_fetch_assoc($result)) {
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-
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- array_push($arr, $row);
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- }
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-
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- return $arr;
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- }
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- //搜索指定字段数据
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- public function find()
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- {
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- //执行sql语句
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- $result = mysql_query("select ".$this->fieldname." from ".$this->tablename.$this->where, $this->conn);
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- $result = mysql_fetch_assoc($result);
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- return $result;
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- }
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-
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- //增加数据到数据库
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- public function add($data)
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- {
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- $keysql='';
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- $valuesql='';
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- foreach ($data as $key => $value) {
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- $keysql.=",`$key`";
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- $valuesql.=",'$value'";
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- }
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- $keysql=substr($keysql, 1);
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- $valuesql=substr($valuesql, 1);
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- $result=mysql_query("insert into `".$this->tablename."` ($keysql) VALUES($valuesql)");
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- $id=mysql_insert_id();
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- //print_r("insert into `".$this->tablename."` ($keysql) VALUES($valuesql)");
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- return $id;
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- }
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-
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- //修改数据库的内容
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- public function save($data)
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- {
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- $keysql='';
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- $valuesql='';
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- foreach ($data as $key => $value) {
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- $keysql.=",`$key`='$value'";
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- }
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- $keysql=substr($keysql, 1);
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- //print_r($keysql);
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- //echo "
";
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- $result=mysql_query("UPDATE `".$this->tablename."` SET ".$keysql.$this->where);
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- //print_r("UPDATE `".$this->tablename."` SET ".$keysql.$this->where);
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- return $result;
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- }
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-
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- ##删除数据
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- public function delete()
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- {
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- $result=mysql_query("DELETE FROM $this->tablename $this->where");
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- //print_r("DELETE FROM $this->tablename $this->where");
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- return $result;
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- }
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-
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- }
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-
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- /**
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- * mysql_fetch_row: 返回单列的各字段 [0]=>"111"
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- * mysql_fetch_field: 取得字段信息。[0]=> ['name']=> object
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- * mysql_fetch_array 返回数组资料。 [0]=>"asasds" ['name']=>
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- */
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- ?>
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