<?Php
session_start();
for($i=0;$i<4;$i++){
$rand.=dechex(rand(1,15);
}
$_SESSION[pic]=$rand;
$im=imagecreatetruecolor(100,300);
//设置颜色
$bg=imagecolorallocate($im,0,0,0);//第一次用调色板的时候,是背景颜色
$tc=imagecolorallocate($im,255,255,255);
//把字符串写在图像
imagestring($im,rand(1,6),0,0,$rand,$tc)
//输出图片
header("Content-type:image/jpge"):
imagejpeg($im);
session_start():
//判断是否提交
if($_POST[check]{
if($_POST[check]==$_SESSION[pic]{
echo "成功";
}else
{
echo "失败";
}
} ?>
<form action=""methos="post">
<img src="vip.php">
<input type="text" name="check" value="">
<input type="submit" value="tijiao"/>
</form>
session_start();
for($i=0;$i<4;$i++){
$rand.=dechex(rand(1,15);
}
$_SESSION[pic]=$rand;
$im=imagecreatetruecolor(100,300);
//设置颜色
$bg=imagecolorallocate($im,0,0,0);//第一次用调色板的时候,是背景颜色
$tc=imagecolorallocate($im,255,255,255);
//把字符串写在图像
imagestring($im,rand(1,6),0,0,$rand,$tc)
//输出图片
header("Content-type:image/jpge"):
imagejpeg($im);
session_start():
//判断是否提交
if($_POST[check]{
if($_POST[check]==$_SESSION[pic]{
echo "成功";
}else
{
echo "失败";
}
} ?>
<form action=""methos="post">
<img src="vip.php">
<input type="text" name="check" value="">
<input type="submit" value="tijiao"/>
</form>
$rand = 0;
for($i = 0; $i < 4; $i ++){
$rand .= dechex(rand(1, 15));
}$_SESSION['pic'] = $rand; $im=imagecreatetruecolor(100,300); //设置颜色
$bg=imagecolorallocate($im,0,0,0);//第一次用调色板的时候,是背景颜色 $tc=imagecolorallocate($im,255,255,255); //把字符串写在图像
imagestring($im,rand(1,6),0,0,$rand,$tc);//输出图片
header("Content-type:image/jpeg");
imagejpeg($im);
//session_start();
////判断是否提交
//
//if($_POST['check']{
// if($_POST['check']==$_SESSION['pic']{
// echo "成功";
// }else{
// echo "失败";
// }
//}
?>
<form method="post">
<img src="test.php">
<input type="text" name="check" value="">
<input type="submit" value="tijiao"/>
</form>
//================================================================================
function p($var){echo '<pre>';if(!$var){var_dump($var);}else{print_r($var);}exit;}
//================================================================================session_start(); $rand = 0;for($i = 0; $i < 4; $i ++){ $rand .= dechex(rand(1, 15));
}$_SESSION['pic'] = $rand; $im=imagecreatetruecolor(45, 20); $bg=imagecolorallocate($im, 0, 0, 0);$tc=imagecolorallocate($im, 255, 255, 255); imagestring($im, rand(1, 6), 0, 0, $rand, $tc);
header("Content-type:image/jpeg"); imagejpeg($im);session_start();if($_POST['check']){ if($_POST['check'] == $_SESSION['pic']){ echo "成功";
}else{ echo "失败";
}
}
?>
<form method="post">
<img src="test.php">
<input type="text" name="check">
<input type="submit" value="tijiao"/>
</form>