PDO预处理案例

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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');          $name=$_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";          }      ?>

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