mysqli扩展库通用数据库查询更新方…

<?php

//mysqli扩展库的通用方法
class  sqliTool{

private $mysqli;
private $host="localhost";
private $name="root";
private $passwd="123456";
private $db="worddb";

function sqliTool(){
$this->mysqli=new
mysqli($this->host,$this->name,$this->passwd,$this->db);

if($this->mysqli->connect_error){
die("连接失败".$this->mysqli->connect_error);
}
}

//查询方法
function sqli_dql($sql){
$res=$this->mysqli->query($sql);
if(!$res){
die("查询过程出错".$this->mysqli->error);
}
return $res;
}

//更新和删除方法
function sqli_dml($sql){

echo
"$sql";

$res=$this->mysqli->query($sql);
if(!$res){
echo
"更新/删除失败";
return 0;
}
else{
if($this->mysqli->affected_rows>0){

echo
"执行成功";
return 1;

}
else{
echo
"没有受影响的行数";
return 2;//没有受影响的行
}
}

$this->mysqli->close();

}

}

?>

测试方法

<?php
require_once
'sqliTool.class.php';

$sqliTool=new
sqliTool();
$sql="insert into
words(enword,chword) values('baohanqing','包汉青')";
$res=$sqliTool->sqli_dml("$sql");
$sql2="select * from
words";
$res2=$sqliTool->sqli_dql($sql2);
echo
"<br/>";
while
($row=$res2->fetch_row()){
foreach ($row as
$key=>$val){
echo "--$val";
}
echo
"<br/>";
}
$res2->free;
?>