生成的图片为mpdf [英] Generated picture in mpdf
问题描述
我已经使用zend barcode生成了barcode，并在kohana 3.3.1 controller中生成了它，看起来像这样.
I have generated barcode using zend barcode and out it in a kohana 3.3.1 controller and it looks like this.
<?php defined('SYSPATH') or die('No direct script access.');
class Controller_Barcode extends Controller_Base {
public function after()
{
$this->response->headers('Content-Type','image/gif');
parent::after();
}
public function action_Letter()
{
Helper_Barcode::generate_barcode(Enum_Post::LETTER);
}
}
它在查看网站上效果很好，但是当我在mpdf view中使用它时，例如:
It works great on view sites but when I'm using it in mpdf view like:
<div><img src="/Barcode/Letter"></div>
它给我错误:
mPDF error: IMAGE Error (/Barcode/Letter): Error parsing image file - image type not recognised, and not supported by GD imagecreate
有人知道怎么了吗?
推荐答案
我也遇到了通过POST将图像解析到mPDF库或进行AJAX调用的问题.当我发送一些带有标签的HTML字符串时，它显示了以下错误:
I had also problems parsing images to mPDF library vía POST or making an AJAX call. When I send some HTML String with an tag on it, it showed me the following error:
"mPDF错误:图像错误( http://www.xxxxxx.com/folder/my_image .jpg ):解析图像文件时出错-无法识别图像类型，并且GD imagecreate不支持该图像类型."
"mPDF error: IMAGE Error (http://www.xxxxxx.com/folder/my_image.jpg): Error parsing image file - image type not recognised, and not supported by GD imagecreate"
我的解决方案是，而不是发送HTML代码中的标签，而是发送自定义标识符，例如:
My solution was, instead of sending tags in my HTML code, send a custom identifier like:
<body>
code code code
insert_image:my_image.jpg
code code code
</body>
—>所有这些html都将在POST字段中发送
—> All this html will be sent in a POST field
然后，在将使用mPDF的PHP中，我用正确的标签替换了该自定义代码:
Then, in the PHP that will use mPDF I replaced that custom code with the correct tags:
<?php
$content_html = $_POST[‘my_html_code_to_pdf']; // THE POSTED FIELD WITH ALL MY HTML CODE
$content_html = preg_replace("/insert_image*:([a-z_0-9.]*)/", " <img src='http://www.xxxxxx.com/folder/$1'/> ", $content_html);
$mpdf=new mPDF();
$mpdf->WriteHTML($content_html);
$mpdf->Output();
exit;
?>
它奏效了！
希望这会有所帮助！
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