下面你会找到我的uploadAction函数。这段代码有效。我能够得到图像。但是,我想将自动调整大小机制集成到代码中。有人可以向我解释如何强制我在上传动作中上传文件,以便通过调整大小功能进行解析。
public function uploadAction()
{
$request = $this->getRequest();
$error = null;
if ($request->isPost()) {
if ($request->getParam('submit')) {
// Create upload object
$upload = new Zend_File_Transfer();
// Add our validators
$upload->addValidator('Size', false, 102400);
$upload->addValidator('Extension', false, 'jpg,png,gif');
// Set our destination
$upload->setDestination(APPLICATION_PATH . '/../public/images/blog/');
if(!$upload->receive()) {
$messages = $upload->getMessages();
foreach ($messages as $type => $message) {
switch($type) {
case 'fileExtensionFalse':
$this->view->error = 'File must be an image (jpg, gif, png)';
break;
case 'fileUploadErrorNoFile':
$this->view->error = 'Please select a file to upload';
break;
default:
$this->view->error = implode("/n", $messages);
break;
}
}
}
print_r($messages); die();
}
}
}
调整功能
public function fastimagecopyresampled (&$dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h, $quality = 4)
{
if (empty($src_image) || empty($dst_image)) { return false; }
if ($quality <= 1)
{
$temp = imagecreatetruecolor ($dst_w + 1, $dst_h + 1);
imagecopyresized ($temp, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w + 1, $dst_h + 1, $src_w, $src_h);
imagecopyresized ($dst_image, $temp, 0, 0, 0, 0, $dst_w, $dst_h, $dst_w, $dst_h);
imagedestroy ($temp);
}
elseif ($quality < 5 && (($dst_w * $quality) < $src_w || ($dst_h * $quality) < $src_h))
{
$tmp_w = $dst_w * $quality;
$tmp_h = $dst_h * $quality;
$temp = imagecreatetruecolor ($tmp_w + 1, $tmp_h + 1);
imagecopyresized ($temp, $src_image, 0, 0, $src_x, $src_y, $tmp_w + 1, $tmp_h + 1, $src_w, $src_h);
imagecopyresampled ($dst_image, $temp, $dst_x, $dst_y, 0, 0, $dst_w, $dst_h, $tmp_w, $tmp_h);
imagedestroy ($temp);
} else
{
imagecopyresampled ($dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h);
}
return true;
}
我希望能够在上传时更改图像的大小和质量。访问我刚刚上传的文件的功能或调用是什么,或者我可以在保存之前操作文件?就像上传文件一样,通过我的函数传递它,然后从那里输出成为我的“保存”文件?
答案 0 :(得分:3)
创建自己的过滤器。
http://framework.zend.com/manual/1.12/en/zend.filter.writing_filters.html
class Resize implements Zend_Filter_Interface
{
public function filter($value)
{
// perform some transformation upon $value to arrive on $valueFiltered
return $valueFiltered;
}
}
在过滤方法中,您将收到上传文件的路径。在那里调整大小并返回新路径。然后,您可以在上传对象中指定此过滤器:
$upload->addFilter("Resize");
Zend_File_Transfer过滤器的详细说明here