復制代碼 代碼如下:

<?
session_start();
for($i=0; $i<4; $i++){
$rand.= dechex(rand(1,15));
}
$_SESSION[check_pic]=$rand;
//echo $_SESSION[check_pic];
// 設置圖片大小
$im = imagecreatetruecolor(100,30);
// 設置顏色
$bg=imagecolorallocate($im,0,0,0);
$te=imagecolorallocate($im,255,255,255);
// 把字符串寫在圖像左上角
imagestring($im,rand(5,6),rand(25,30),5,$rand,$te);
// 輸出圖像
header("Content-type:image/jpeg");
imagejpeg($im);
?>

復制代碼 代碼如下:

<div>
<fieldset><legend>留言</legend>
<div>
<form action="../utity/post.php" method="post" onsubmit="return chkinput(this)">
<input type="text" /> 您的名字
<input type="text" /> 您的郵件
<input type="text" /> 您的網站
<textarea>
</textarea><br />
<img src="checkcode.php"><input type="text"><br />
<input type="submit" value="提交" />
</form>
</div>
<br clear="both" />
</fieldset>

復制代碼 代碼如下:

<?php
session_start();
if(isset($_POST[check]))
{
if($_POST[check] == $_SESSION[check_pic])
{
// echo "驗證碼正確".$_SESSION[check_pic];
require("dbinfo.php");
$name = $_POST['name'];
$email = $_POST['email'];
$website = $_POST['website'];
$content = $_POST['content'];
$date = date("Y-m-d h:m:s");
// 連接到 MySQL 服務器
$connection = mysql_connect ($host, $username, $password);
if (!$connection)
{
die('Not connected : ' . mysql_error());
}
// 設置活動的 MySQL 數據庫
$db_selected = mysql_select_db($database, $connection);
if (!$db_selected)
{
die ('Can/'t use db : ' . mysql_error());
}
// 向數據庫插入數據
$query = "insert into table (nowamagic_name, nowamagic_email, nowamagic_website, nowamagic_content, nowamagic_date) values ('$name','$email','$website','$content','$date')";
$result = mysql_query($query);
if($result)
{
echo "<script>alert('提交成功'); history.go(-1);</script>";
}
if (!$result)
{
die('Invalid query: ' . mysql_error());
}
}
else
{
echo "<script>alert('驗證碼錯誤'); history.go(-1);</script>";
}
}
?>