pdo预处理案例

蔚落 2022-08-21 12:52 165阅读 0赞

pdo防止sql注入预处理

1.查询

public function dologin2(){
        $dsn = "mysql:host=127.0.0.1;dbname=php7";//pdo 连接方法
        $db = new PDO($dsn, 'root', 'root',array(PDO::MYSQL_ATTR_INIT_COMMAND => "set names utf8"));
        $name=$_POST['name'];//$name="zhangsan' or 'a' ='a"
        $pwd=$_POST['pwd'];
        /*
        $count = $db->exec("insert into pdo1(name,pwd) value('$name','$pwd')");
        echo $count;
        */
        $sql="SELECT * FROM pdo1 where name='$name' and pwd='$pwd'";
        $sql="select * from pdo1 where name = ? and pwd = ?";
        $stmt = $db->prepare($sql);
        $exeres = $stmt->execute(array($name,$pwd));
        if ($exeres) {
            while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
                setcookie('name',$name);
                redirect("welcome/asdf");
            }
        }
    
    }

2.添加

<?php
    	header("content-type:text/html;charset=utf-8");
        $ch = curl_init();
        $url ='http://apis.baidu.com/apistore/iplookupservice/iplookup?ip=117.89.65.68';
        $header = array(
            'apikey: 10d4752cc594de7808c253fccd754832',
        );
        curl_setopt($ch, CURLOPT_HTTPHEADER  , $header);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch , CURLOPT_URL , $url);
        $res = curl_exec($ch);
        $arr=json_decode($res,true);
        //print_r($json);die;
        $dsn = "mysql:host=localhost;dbname=php7";
    	$pdo=new PDO($dsn,'root','root',array(PDO::MYSQL_ATTR_INIT_COMMAND=>'set names utf8'));
    	$stmt=$pdo->prepare("insert into day15(ip,country,city,district,carrier,province)values(:ip,:co,:ci,:di,:ca,:pr)");
    	$stmt->bindparam("ip",$arr['retData']['ip']);
    	$stmt->bindparam("co",$arr['retData']['country']);
    	$stmt->bindparam("ci",$arr['retData']['city']);
    	$stmt->bindparam("di",$arr['retData']['district']);
    	$stmt->bindparam("ca",$arr['retData']['carrier']);
    	$stmt->bindparam("pr",$arr['retData']['province']);
    	if($stmt->execute()){
    	    echo "执行成功";
    	    echo "最后插入的ID:".$pdo->lastInsertId();
    	}else{
    	    echo "执行失败";
    	}
    ?>