文件上传
<form action="upchuli.php" method="post" enctype="multipart/form-data"> <input type="file" name="file" /> <input type="submit" value="上传" /> </form>
1.控制上传文件的类型和大小
2.如果文件名重复出现覆盖
3.减少文件重名的概率 修改文件名 建文件夹
4.关于中文乱码问题
<?php
var_dump($_FILES["file"]);
if(($_FILES["file"]["type"]=="image/jpeg" || $_FILES["file"]["type"]=="image/png") && $_FILES["file"]["size"]<=102400)
{
//执行上传操作
//造一个存储路径
$yuan=$_FILES["file"]["tmp_name"];
$filename="./img/".date("YmdHis").$_FILES["file"]["name"];
//将存储路径的编码格式变为国标
$filename=iconv("UTF-8","gb2312",$filename);
//判断文件是否存在
if(file_exists($filename))
{
die( "文件已存在");
//exit();
}
//移动文件
move_uploaded_file($yuan,$filename);
}
else
{
echo "上传的文件不符合要求";
}
用户注册实现头像上传
<h1>注册</h1> <form action="zhucechuli.php" method="post" enctype="multipart/form-data"> <div>用户名：<input type="text" name="uid" /></div> <div>密码：<input type="text" name="pwd" /></div> <div>姓名：<input type="text" name="name" /></div> <div>性别：<input type="text" name="sex" /></div> <div>生日：<input type="text" name="birthday" /></div> <div>头像：<input type="file" name="pic" /></div> <input type="submit" value="注册" /> </form>
<?php
include("../DBDA.class.php");
$db=new DBDA();
//控制上传格式
if(($_FILES["pic"]["type"]=="image/jpeg" || $_FILES["pic"]["type"]=="image/png") && $_FILES["pic"]["size"]<102400)
{
//处理文件名
$filename="./img/".date("YmdHis").$_FILES["pic"]["name"];
// 转编码格式
$filename=iconv("UTF-8","gb2312",$filename);
//判断文件是否存在
if(!file_exists($filename))
{
//执行上传文件
move_uploaded_file($_FILES["pic"]["tmp_name"],$filename);
}
}
//向user表添加数据
$uid=$_POST["uid"];
$pwd=$_POST["pwd"];
$name=$_POST["name"];
$sex=$_POST["sex"]=="男"?true:false;
$birthday=$_POST["birthday"];
$url="/0630wenjianshangchuan/".$filename;
$sql="insert into user values('{$uid}','{$pwd}','{$name}',{$sex},'{$birthday}',false,'{$url}')";
$db->Query($sql,0);
header("location:login.php");
<form action="loginchuli.php" method="post"> <h1>登录</h1> <div>用户名：<input type="text" name="uid" /></div> <div>密码：<input type="password" name="pwd" /></div> <input type="submit" value="登录" /> </form>
<?php
session_start();
include("../DBDA.class.php");
$db=new DBDA();
$uid=$_POST["uid"];
$pwd=$_POST["pwd"];
/*$sql="select count(*) from user where Uid='($uid)' and Pwd='{$pwd}'";
$zhi=$db->StrQuery($sql);
if($zhi>0)
{
$_SESSION["uid"]=$uid;
header("location:main.php");
}
else
{
echo "登录失败";
}*/
$sql="select Pwd from user where Uid='{$uid}'";
$mima=$db->StrQuery($sql);
if($pwd==$mima && $pwd !="")
{
$_SESSION["uid"]=$uid;
header("location:main.php");
}
else
{
echo "用户名或密码错误";
}
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<?php
session_start();
if(empty($_SESSION["uid"]))
{
header("location:login.php");
exit();
}
$uid=$_SESSION["uid"];
include("../DBDA.class.php");
$db=new DBDA();
$sql="select * from user where Uid='{$uid}'";
$attr=$db->Query($sql);
?>
<body>
<div>用户名：<?php echo $attr[0][0] ?></div>
<div>密码：<?php echo $attr[0][1] ?></div>
<div>姓名：<?php echo $attr[0][2] ?></div>
<div>性别：<?php echo $attr[0][3]?"男":"女" ?></div>
<div>生日：<?php echo $attr[0][4] ?></div>
<div>头像：<img src="<?php echo $attr[0][6] ?>" width="200" height="200"/></div>
</body>
</html>