Detailed explanation of the sample code for PDO-based preprocessing in PHP

This article mainly introduces the php implementation of preprocessing based on PDO, and analyzes the relevant operating skills and precautions for PDO preprocessing in php based on examples. ##, friends who need it can refer to

The example of this article describes the implementation of PDO-based preprocessing in PHP. Share it with everyone for your reference, the details are as follows:

$servername="localhost";
$username="root";
$password="admin";
//$dbname为我的test数据库
$dbname="test";
try{
  $conn=new PDO("mysql:host=$servername;dbname=$dbname",$username,$password);
  //设置pdo错误异常处理
  $conn->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
  //预处理SQL并绑定参数
  $stmt=$conn->prepare("INSERT INTO user(user_first,user_last,age)VALUES(:user_first,:user_last,:age)");
  $stmt->bindParam(":user_first",$user_first);
  $stmt->bindParam(":user_last", $user_last);
  $stmt->bindParam(":age",$age);
  //要执行的插入记录
  $user_first="xiao";
  $user_last="liang";
  $age=15;
  $stmt->execute();
  //要执行的插入记录
  $user_first="xiao";
  $user_last="cheng";
  $age=23;
  $stmt->execute();
  echo "News record created successfully!";
}catch(PDOException $e){
  echo "Error:".$e->getMessage();
}
$conn=null;

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