阿拉伯字体在dompdf中以相反的顺序显示 [英] arabic fonts display in reverse order in dompdf

问题描述

我正在使用dompdf来使用dompdf转换html页面，但是它以相反的顺序显示阿拉伯文本

I am using dompdf to convert a html page using dompdf, but it is showing arabic text in reverse order

例如，如果文本是

ايبنسيالرمس

ايبنسيالرمس

然后它显示为

PDF中的مرلايسنبيا

مرلايسنبيا in PDF

知道为什么吗?

推荐答案

dompdf当前不支持方向性，因此关于字符流，RTL语言将无法正确显示.尽管确实需要修改dompdf代码，但仍有一种可以按正确顺序显示字符的技巧.

dompdf does not currently support directionality, so RTL languages will not display correctly in regard to character flow. There is a hack for displaying characters in the correct order, though it does require modification of the dompdf code.

如果您想尝试修改，则需要两个步骤.首先，用direction: rtl; text-align: right;设置应显示RTL的所有文本的样式.然后，在文件dompdf/include/text_renderer.cls.php中，在$canvas->text()(或任何变体，例如$this->_canvas->text())的每个实例之前添加以下行:

If you would like to try the modification two steps are required. First, style any text that should display RTL with direction: rtl; text-align: right;. Then, in the file dompdf/include/text_renderer.cls.php add the following lines before each instance of $canvas->text() (or any variant, such as $this->_canvas->text()):

if (strtolower($style->direction) == 'rtl') {
  preg_match_all('/./us', $text, $ar);
  $text = join('',array_reverse($ar[0]));
}

(您可能必须更改$text变量的名称以匹配代码中使用的名称.)

(You may have to change the name of the $text variable to match what's used in the code.)

参考:

• https://github.com/dompdf/dompdf/issues/426
• > https://groups.google.com/d/topic/dompdf/qfWb24ct7Ts/discussion

• https://github.com/dompdf/dompdf/issues/426
• https://groups.google.com/d/topic/dompdf/qfWb24ct7Ts/discussion

此外，我们还看到了一个问题，即在渲染单词时字符无法按预期的方式连接在一起.这是我们尚未有机会探讨的问题.

Additionally we've seen an issues where characters don't join together as expected when rendering words. This is an issue we haven't had a chance to explore yet.

参考:

• https://github.com/dompdf/dompdf/issues/712

目前，要完全支持方向性，您最好的选择是使用无头浏览器，例如 PhantomJS .

Your best option right now for full support of directionality is to use a headless browser, e.g. PhantomJS.

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