为了节省以后的时间,今天封装了操作sql语句的一个类,在此保存起来,方面以后使用。
这个类的文件名:SqlTool.class.php
主要有dql和dml两个函数
看下面的源码“
<?php class SqlTool{ private $conn; private $username="root"; private $password="1234"; private $host="127.0.0.1"; private $db="test"; function SqlTool(){ $this->conn=mysql_connect($this->host,$this->username,$this->password); if(!$this->conn) { die ("连接失败".mysql_error($this.conn)); } mysql_select_db($this->db,$this->conn); mysql_query("set names utf8"); } //完成select function execute_dql($sql) { $result = mysql_query($sql,$this->conn); $arrTemp = array(); $counter = 0; while($row = mysql_fetch_assoc($result)) { $arrTemp[$counter] = $row; $counter++; } mysql_free_result($result); mysql_close($this->conn); return json_encode($arrTemp); } //完成dml public function execute_dml($sql) { $res=mysql_query($sql,$this->conn); if(!$res) { return 0; //执行失败 } else { if(mysql_affected_rows($this->conn)>0) { return 1; //执行成功 } else { return 2; //没有行数收到影响 } } } } ?>
演示一下使用方法:
<?php @header("content-Type:text/html;charset:utf-8"); require_once "SqlTool.class.php"; $sqlStr = "insert into student(number,name,age) values('200911230','huzhuxi','45');"; $sqlTool = new SqlTool(); $result1=$sqlTool->execute_dml($sqlStr); echo "结果为:".$result1."<br/>"; $sqlStr1 = "select * from student"; $resultStr = $sqlTool->execute_dql($sqlStr1); echo "当前数据:<br/>".$resultStr; ?>

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