代码如下<?php
//header("Content-type:image/jpeg");
if($_GET)
{
$user = $_GET["user"];
$pass = $_GET["pass"];
$do = mysql_connect("localhost","root","199324");
if($do)
{
mysql_query("SET NAMES GB2312");
mysql_select_db("test");
$sql = "SELECT ID FROM user1_data WHERE 姓名='$user' and 密码='$pass' ";
$result = mysql_query($sql);
$num = mysql_num_rows($result);
if($num>0)
{
if(isset($_SESSION["admin"]))
{
echo "用户已登录!";
}else
{
session_start();
$_SESSION["admin"] = true;
if(isset($_SESSION["admin"]) && $_SESSION["admin"]===true)
{
echo "<script language='javascript'>
alert('你好!$user');
</script>";
$sql1 = "SELECT * FROM user1_data WHERE 姓名='$user' and 密码='$pass' ";
$result = mysql_query($sql1);
$row= mysql_fetch_array($result);
$signature = $row[个性签名];
$ID = $row[ID];
$path = $row[图片路径];
//echo "图片路径为:".$path."<p>";
// echo "<img src='$path'>";
function resizeimage($srcpath) //制作图片缩略图
{
// header("Content-type:image/png"); $a = getimagesize($srcpath);
switch($a[2])
{
case 1:
$im = imagecreatefromgif($srcpath);
break;
case 2:
$im = imagecreatefromjpeg($srcpath);
break;
case 3:
$im = imagecreatefrompng($srcpath);
break;
}
$srcw = imagesx($im);
$srch = imagesy($im);
$img = imagecreatetruecolor(100,100);
$black = imagecolorallocate($img,255,255,255);
imagefilledrectangle($im,0,0,100,100,$black);
imagecopyresized($img,$im,0,0,0,0,100,100,$srcw,$srch);
imagejpeg($img);
imagedestroy($img);
imagedestroy($im);
}
resizeimage($path);
echo "<p>".$ID."<P>";
// echo "<img src='$path'>";
echo " $user<p>";
echo "<p>$signature<a href ='updatesign.php?id=$ID'>修改签名</a>";
echo "<p><a href='updatepass.php?id=$ID'>修改密码</a>";
echo "<p><a href='logout.php'>退出登录</a>"; }
}
}else
{
echo "密码或用户名不正确!请重新输入!";
echo "<meta http-equiv='refresh' content='2; url=login1.html'>";
}
}else
{
echo "连接数据库失败!";
}
}else
{
echo "没有用户信息提交!";
}
?>
单独测试函数部分没有错误 可是 在这个程序中 输出的图像总是乱码 是怎么回事呢
//header("Content-type:image/jpeg");
if($_GET)
{
$user = $_GET["user"];
$pass = $_GET["pass"];
$do = mysql_connect("localhost","root","199324");
if($do)
{
mysql_query("SET NAMES GB2312");
mysql_select_db("test");
$sql = "SELECT ID FROM user1_data WHERE 姓名='$user' and 密码='$pass' ";
$result = mysql_query($sql);
$num = mysql_num_rows($result);
if($num>0)
{
if(isset($_SESSION["admin"]))
{
echo "用户已登录!";
}else
{
session_start();
$_SESSION["admin"] = true;
if(isset($_SESSION["admin"]) && $_SESSION["admin"]===true)
{
echo "<script language='javascript'>
alert('你好!$user');
</script>";
$sql1 = "SELECT * FROM user1_data WHERE 姓名='$user' and 密码='$pass' ";
$result = mysql_query($sql1);
$row= mysql_fetch_array($result);
$signature = $row[个性签名];
$ID = $row[ID];
$path = $row[图片路径];
//echo "图片路径为:".$path."<p>";
// echo "<img src='$path'>";
function resizeimage($srcpath) //制作图片缩略图
{
// header("Content-type:image/png"); $a = getimagesize($srcpath);
switch($a[2])
{
case 1:
$im = imagecreatefromgif($srcpath);
break;
case 2:
$im = imagecreatefromjpeg($srcpath);
break;
case 3:
$im = imagecreatefrompng($srcpath);
break;
}
$srcw = imagesx($im);
$srch = imagesy($im);
$img = imagecreatetruecolor(100,100);
$black = imagecolorallocate($img,255,255,255);
imagefilledrectangle($im,0,0,100,100,$black);
imagecopyresized($img,$im,0,0,0,0,100,100,$srcw,$srch);
imagejpeg($img);
imagedestroy($img);
imagedestroy($im);
}
resizeimage($path);
echo "<p>".$ID."<P>";
// echo "<img src='$path'>";
echo " $user<p>";
echo "<p>$signature<a href ='updatesign.php?id=$ID'>修改签名</a>";
echo "<p><a href='updatepass.php?id=$ID'>修改密码</a>";
echo "<p><a href='logout.php'>退出登录</a>"; }
}
}else
{
echo "密码或用户名不正确!请重新输入!";
echo "<meta http-equiv='refresh' content='2; url=login1.html'>";
}
}else
{
echo "连接数据库失败!";
}
}else
{
echo "没有用户信息提交!";
}
?>
单独测试函数部分没有错误 可是 在这个程序中 输出的图像总是乱码 是怎么回事呢
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在你的代码中,注释掉了 header("Content-type:image/jpeg");
因此缺省值将是 text/html。这会声明响应内容为字符流,而图片的字节流将不能被正确转换说到底,最方便的办法是把图片流写入到文件系统(比如在网站根目录下专设一个存储图片的文件夹)
imagejpeg($img, "{$_SERVER['DOCUMENT_ROOT']}/image/{$img_name}");
然后输出HTML代码 <img src="/image/<?php echo "/image/{$img_name}"; ?> />