mysql预编译处理（mysqli、PDO）

DML语句预编译：

MysqLi：

<?php

	$mysqli = new mysqli("localhost","root","root","dbname");
	$mysqli->query("set names utf8");
	$sql = 'insert into user(id,name,age,email) values (?,?,?,?)';
	$mysqli_stmt = $mysqli->prepare($sql);

	$id = 2;
	$name = 'kung';
	$age = 28;
	$email = '[email protected]';

	$mysqli_stmt->bind_param('isis',$id,$name,$age,$email);

	$res = $mysqli_stmt->execute();

	if(!$res){
		echo 'error'.$mysqli_stmt->error;
		exit;
	}else{
		echo 'ok';
	}

	$id = 3;
	$name = 'xiaoyu';
	$age = 28;
	$email = '[email protected]';

	$mysqli_stmt->bind_param('isis',$id,$name,$age,$email);
	$res = $mysqli_stmt->execute();

	if(!$res){
		echo 'error'.mysqli_stmt->error;
		exit;
	}else{
		echo 'ok';
	}
?>

PDO：

<?php
	$dns = 'mysql:dbname=dbname;host=127.0.0.1';
	$user = 'root';
	$password = 'root';
try{
	$pdo = new PDO($dns,$user,$password);
} catch(PDOException $e){
	echo $e->getMessage();
}
	$pdo->query("set names utf8");

	$sql = 'inser into user values(:id,:name,:age,:email)';
	$pdo_stmt = $pdo->prepare($sql);

	$id = 2;
	$name = 'kung';
	$age = 27;
	$email = '[email protected]';

	$pdo_stmt->bindParam(':id',$id);
	$pdo_stmt->bindParam(':name',$name);
	$pdo_stmt->bindParam(':age',$age);
	$pdo_stmt->bindParam(':email',$email);
	$pdo_stmt->execute();
?>

DQL语句预编译：

mysqli：

<?php
	$mysqli = new mysqli("localhost","root","root","dbname");
	$mysqli->query("set names utf8");
	$sql = " select id,name from user where id > ?";
	$mysqli_stmt = $mysqli->prepare($sql);

	$id = 1;
	$mysqli_stmt->bind_param('i',$id);
	$mysqli_stmt->bind_result($id,$name);
	$mysqli_stmt->execute();

	while($mysqli_stmt->fetch()){
		echo $id.'--'.$name;
	}

	$mysqli_stmt->close();
	$mysqli->close();
?>