$_POST[]获取不到值的问题
form表单如下<form action="pic.php" method="post" >
<table class="reg">
<tr><td class="title" colspan="2">欢迎登录</td></tr>
<tr><th>用户名：</th><td><input type="text" name="username" /></td></tr>
<tr><th>密码：</th><td><input type="password" name="password" /></td></tr>
<tr><td colspan="2" class="td-btn">
<input type="submit" value="登录" class="button" name="Login" />
<input type="reset" value="重新填写" class="button" />
</td></tr>
</table>
</form>
提交结果处理页面如下
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php
/******************************************************************************
参数说明:
$max_file_size : 上传文件大小限制, 单位BYTE
$destination_folder : 上传文件路径
$watermark : 是否附加水印(1为加水印,其他为不加水印);
使用说明:
1. 将PHP.INI文件里面的"extension=php_gd2.dll"一行前面的;号去掉,因为我们要用到GD库;
2. 将extension_dir =改为你的php_gd2.dll所在目录;
******************************************************************************/
//上传文件类型列表
error_reporting(E_ALL || ~E_NOTICE);
$uptypes=array(
'image/jpg',
'image/jpeg',
'image/png',
'image/pjpeg',
'image/gif',
'image/bmp',
'image/x-png'
);
$max_file_size=2000000; //上传文件大小限制, 单位BYTE
$destination_folder="uploadimg/"; //上传文件路径
$watermark=1; //是否附加水印(1为加水印,其他为不加水印);
$watertype=1; //水印类型(1为文字,2为图片)
$waterposition=1; //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中);
$waterstring="http://www. //水印字符串
$waterimg="xplore.gif"; //水印图片
$imgpreview=1; //是否生成预览图(1为生成,其他为不生成);
$imgpreviewsize=1/2; //缩略图比例
?>
<html>
<head>
<title>ZwelL图片上传程序</title>
<style type="text/css">
<!--
body
{
font-size: 9pt;
}
input
{
background-color: #66CCFF;
border: 1px inset #CCCCCC;
}
-->
</style>
</head>
<body>
<form method="post" enctype="multipart/form-data" name="">
上传文件:
<input name="upfile" type="file">
<input type="submit" value="上传">
<input type="button" value="点击查看已上传图片" onclick="javascript:window.location.href='post.php?sub=yes'"><br>
允许上传的文件类型为:<?=implode(', ',$uptypes)?>
</form>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
if (!is_uploaded_file($_FILES["upfile"][tmp_name]))
//是否存在文件
{
echo "图片不存在!";
exit;
}
$file = $_FILES["upfile"];
if($max_file_size < $file["size"])
//检查文件大小
{
echo "文件太大!";
exit;
}
if(!in_array($file["type"], $uptypes))
//检查文件类型
{
echo "文件类型不符!".$file["type"];
exit;
}
if(!file_exists($destination_folder))
{
mkdir($destination_folder);
}
$filename=$file["tmp_name"];
$image_size = getimagesize($filename);
$pinfo=pathinfo($file["name"]);
$ftype=$pinfo['extension'];
$destination = $destination_folder.time().".".$ftype;
if (file_exists($destination) && $overwrite != true)
{
echo "同名文件已经存在了";
exit;
}
if(!move_uploaded_file ($filename, $destination))
{
echo "移动文件出错";
exit;
}
$pinfo=pathinfo($destination);
$fname=$pinfo[basename];
echo " <font color=red>已经成功上传</font><br>文件名: <font color=blue>".$destination_folder.$fname."</font><br>";
echo " 宽度:".$image_size[0];
echo " 长度:".$image_size[1];
echo "<br> 大小:".$file["size"]." bytes";
//echo "<img src=$destination>";
// echo "<img src=\"".$destination."\" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);
// echo " alt=\"图片预览:\r文件名:".$destination."\r上传时间:\">";
mysql_connect('localhost','root','root') or die('数据库连接失败！');
mysql_query('set names utf8');
mysql_query('use `pic`') or die('pic数据库不存在！');
//接收需要处理的表单字段
$username = trim($_POST['username']);
$password = $_POST['password'];
echo $username;
echo $password;
mysql_query("insert into `pictrue` (`id`,`username`,`password`) values ('$destination','$username','$password')");
mysql_close($con);
if($watermark==1)
{
$iinfo=getimagesize($destination,$iinfo);
$nimage=imagecreatetruecolor($image_size[0],$image_size[1]);
$white=imagecolorallocate($nimage,255,255,255);
$black=imagecolorallocate($nimage,0,0,0);
$red=imagecolorallocate($nimage,255,0,0);
imagefill($nimage,0,0,$white);
switch ($iinfo[2])
{
case 1:
$simage =imagecreatefromgif($destination);
break;
case 2:
$simage =imagecreatefromjpeg($destination);
break;
case 3:
$simage =imagecreatefrompng($destination);
break;
case 6:
$simage =imagecreatefromwbmp($destination);
break;
default:
die("不支持的文件类型");
exit;
}
imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$image_size[1]);
imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);
switch($watertype)
{
case 1: //加水印字符串
imagestring($nimage,2,3,$image_size[1]-15,$waterstring,$black);
break;
case 2: //加水印图片
$simage1 =imagecreatefromgif("xplore.gif");
imagecopy($nimage,$simage1,0,0,0,0,85,15);
imagedestroy($simage1);
break;
}
switch ($iinfo[2])
{
case 1:
//imagegif($nimage, $destination);
imagejpeg($nimage, $destination);
break;
case 2:
imagejpeg($nimage, $destination);
break;
case 3:
imagepng($nimage, $destination);
break;
case 6:
imagewbmp($nimage, $destination);
//imagejpeg($nimage, $destination);
break;
}
//覆盖原上传文件
// imagedestroy($nimage);
// imagedestroy($simage);
}
if($imgpreview==1)
{
echo "<br>图片预览:<br>";
echo "<img src=\"".$destination."\" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);
echo " alt=\"图片预览:\r文件名:".$destination."\r上传时间:\">";
}
}
?>
</body>
</html>
具体情况是：往数据库插入表单获取的username和password，还有图片路径时，用户名与密码插入不进去，是空字符串
