为什么Image Header不允许我保存图像 - Why Image Header not letting me save image?

Why Image Header not letting me save image?

我正在使用jcrop制作图像裁剪
但是生成的croped图像是不可保存的，我的意思是，当我右键单击并保存图像时，它会保存.php文件
这是使用的代码：

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$targ_iw = $_REQUEST['iwidth'];
$targ_ih = $_REQUEST['iheight'];
$source = $_REQUEST['tname'];
if(empty($targ_iw)){
    $targ_iw = $_POST['w'];
    $targ_ih = $_POST['h'];
    }
    $jpeg_quality = 90;
    $src = 'http://www.imageopti.com/crop/files/'.$source;
    $img_r = imagecreatefromjpeg($src);
    $dst_r = ImageCreateTrueColor( $targ_iw, $targ_ih );
    imagecopyresampled($dst_r,$img_r,0,0,$_POST['x'],$_POST['y'],
    $targ_iw,$targ_ih,$_POST['w'],$_POST['h']);
    header('Content-type: image/jpeg');
    imagejpeg($dst_r, null, $jpeg_quality);
    exit;
}

在HTML代码中，添加

<input type="hidden" name="create" value="true" />

添加我的功能

function new_my_resampled($source, $iwidth, $iheight, $w, $h, $x, $y)
{
    $filename   = "http://www.imageopti.com/crop/files/" . $source;
    $targ_iw = $iwidth;
    $targ_ih = $iheight;
    if(empty($targ_iw))
    {
        $targ_iw = $w;
        $targ_ih = $h;
    }
    $image = imagecreatetruecolor($targ_iw,$targ_ih);
    $o_img = imagecreatefromjpeg($filename);
    imagecopyresampled($image,$o_img,0,0,$x,$y,$targ_iw,$targ_ih,$w,$h);
    imagejpeg($image, null, 100);
}

在php文件中添加

if($_POST['create'] == 'true')
{
    /*
     * Write here your conditions
     */
    $filename = "http://www.imageopti.com/crop/files/" . $_POST['tname'];
    $f_name   = trim(basename($filename));
    //$f_size   = getSizeFile($filename);
    header("(anti-spam-content-type:) image/jpeg");
    header('Cache-control: max-age=31536000');
    header('Expires: ' . gmdate('D, d M Y H:i:s', (time() + 31536000)) . ' GMT');
    header('Content-transfer-encoding: binary');
    header('ETag: "' . time() . '"');
    header("Content-Disposition: attachment; filename=" . $f_name);
    header("Content-type: image/jpeg");
    header("Content-Type: application/octet-stream");
    header("Content-Type: application/download");
    header("Content-Description: File Transfer");  
    //header("Content-length:" . $f_size);
    header("Cache-control: private"); 
    new_my_resampled($_POST['tname'], $_POST['iwidth'], $_POST['iheight'], $_POST['w'], $_POST['h'],$_POST['x'],$_POST['y']);
}

！！！如果您想使用$f_zise和header("Content-length:" . $f_size);，可以使用php.net中的函数getSizeFile

请测试一下。。。