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Methods to solve the problem of Chinese garbled characters in PHP Dompdf
- 王林Original
- 2024-03-05 15:45:03545browse
How to solve the problem of Chinese garbled characters in PHP Dompdf
PHP Dompdf is a tool for converting HTML documents to PDF files. It is powerful and easy to use. However, when processing Chinese content, you sometimes encounter the problem of garbled Chinese characters. This article will introduce some methods to solve the problem of Chinese garbled characters in PHP Dompdf and provide specific code examples.
1. Using font files
When processing Chinese content, a common problem is that Dompdf does not support Chinese fonts by default, causing Chinese to be displayed as garbled characters. In order to solve this problem, we can display Chinese by loading Chinese font files.
First of all, we need to download appropriate Chinese font files, such as Microsoft Yahei (SimSun.ttf), Song Dynasty (simsun.ttf), etc., and place the font files in the font directory of Dompdf (such as in dompdf /lib/fonts directory).
Next, we need to set the Chinese font in the PHP code:
require 'dompdf/autoload.inc.php';
use DompdfDompdf;
use DompdfOptions;
$options = new Options();
$options->set('defaultFont', '微软雅黑');
$dompdf = new Dompdf($options);In the code, we set the defaultFont parameter to the name of the font file by calling the set method, so that Dompdf will use the fonts to render Chinese content.
2. Set the encoding format
Another common problem is that the correct encoding format is not set, resulting in garbled Chinese characters. We can solve this problem by setting the encoding format.
Set the encoding format in the PHP code as follows:
$options = new Options();
$options->set('isHtml5ParserEnabled', true);
$options->set('isPhpEnabled', true);
$options->set('isFontSubsettingEnabled', true);
$options->set('isRemoteEnabled', true);
$options->set('defaultFont', '微软雅黑');
$dompdf = new Dompdf($options);
$dompdf->loadHtml($html, 'UTF-8'); // 设置编码格式为 UTF-8
$dompdf->render();In the code, we set the character encoding to UTF-8 by calling the loadHtml method to ensure that Chinese content can be displayed correctly.
3. Processing Chinese Characters
Sometimes the problem of Chinese garbled characters may be caused by incorrect processing of Chinese characters when generating HTML. We can convert Chinese characters to UTF-8 format by using the mb_convert_encoding function.
The following is a sample code for processing Chinese characters:
$content = "你好，世界！"; $utf8_content = mb_convert_encoding($content, 'UTF-8', 'auto'); $html = "<html><body>$utf8_content</body></html>";
In the code, we first define the Chinese content, then use the mb_convert_encoding function to convert the content to UTF-8 format, and finally insert the content into HTML.
Solving the Chinese garbled problem in PHP Dompdf requires some skills and methods. By setting font files, encoding formats and processing Chinese characters, we can effectively solve the Chinese garbled problem and ensure that Chinese content can be displayed correctly in the generated PDF file. middle.
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