php mysqli 预处理 怎么绑定参数

<?php

/* 连接数据库类 MysqlConnect */

class MysqlConnect{
private $dbhost=null;
private $dbuser=null;
private $dbpwd=null;
private $dbname=null;
private $dbport=null;
private $ifpdo=null;
private $dburi=null;
private $handler=null;

function __construct($dbhost,$dbuser,$dbpwd,$dbname,$dbport,$ifpdo,$dburi){
$this->dbhost=$dbhost;
$this->dbuser=$dbuser;
$this->dbpwd=$dbpwd;
$this->dbname=$dbname;
$this->dbport=$dbport;
$this->ifpdo=$ifpdo;
$this->dburi=$dburi;//PDO的URI参数，可以查手册
if($this->ifpdo==1){//表示调用PDO来操作数据库
$this->handler=$this->CreatePdo();
}elseif($this->ifpdo==0){//这里可以写MYSQLI的方法
$this->handler=null;
}
}
/* ----------------这里是入口--------------------- */
//@param sql:外部调用时传递的完整SQL语句
//@param bindArray:绑定的参数数组，与sql语句有关，如果没有PDO占位符此处为空
//@param action:传递操作参数，"select"/"update"/"delete"/"insert"
public function exeSql($sql,$bindArray=array(),$action=""){
$stmt=$this->handler->prepare($sql);
$stmt->execute($bindArray);
switch($action){
case "select":
return $stmt->fetch(PDO::FETCH_ASSOC);
break;
case "selectAll":
return $stmt->fetchAll(PDO::FETCH_ASSOC);
break;
case "update":
case "delete":
return $stmt->rowCount();
break;
case "insert":
return $this->handler->lastInsertId();
break;
case "count":
return $stmt->rowCount();
default:
return "";
}
}
public function query($sql){
return $this->handler->query($sql);
}
private function CreatePdo(){
try{
$handler=new PDO($this->dburi,$this->dbuser,$this->dbpwd);
$handler->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
return $handler;
}catch(PDOException $e){
$e->getMessage();
$this->handler=null;
}
}
private function __get($args){
if($args=='handler'){
return $this->handler;
}
}
}
require(NEO_A_P.'\data\sqlconfig.php');//这里是sql的连接文件,下面创建对象的时候需要的变量就是这个文件里要有的
$handler=new MysqlConnect($dbhost,$dbuser,$dbpwd,$dbname,$dbport,$ifpdo,$dburi);
?>本回答被提问者采纳