如何在PHP中指定特殊字符

I am trying to output a sigma character (σ) in a label in a FusionChart graph. How can I specify that character in a PHP string? I have tried the htmlentity σ, but it is not interpreted correctly by the graph. Is there any way to specify the character in PHP using some sort of character code?

我试图在FusionChart图中的标签中输出sigma字符(σ)。如何在PHP字符串中指定该字符?我已经尝试了htmlentityσ,但图表没有正确解释。有没有办法使用某种字符代码在PHP中指定字符?

7 个解决方案

#1

You need to make sure you're sending the correct headers when outputting.

您需要确保在输出时发送正确的标题。

<?php

header('Content-Type: text/html; charset=utf-8'); 

$char = utf8_encode(html_entity_decode('&sigma;'));

echo $char;

This will output the character.

这将输出字符。

Edit:

If passing the character into the graph doesn't work, then the software doesn't support UTF-8.

如果将字符传递到图形中不起作用,则软件不支持UTF-8。

#2

The sigma (σ) can be represented in UTF-8 encoding by the byte sequende xCF x83 (codepoint U+03C3), so you could try to build a PHP string

sigma(σ)可以通过字节顺序xCF x83(代码点U + 03C3)以UTF-8编码表示,因此您可以尝试构建PHP字符串

$sigma = "\xCF\x83";

~~But as I don't know FusionChart, I cannot say if it can handle UTF-8 encoded strings or multi-byte strings in general.~~ According to their product description, they do support unicode (but require a UTF-8 BOM), so you can build the XML response in PHP:

但由于我不知道FusionChart,我不能说它是否能够处理UTF-8编码的字符串或一般的多字节字符串。根据他们的产品描述,他们支持unicode(但需要UTF-8 BOM),因此您可以在PHP中构建XML响应:

$response = "\xEF\xBB\xEF<?xml version=\"1.0\" encoding=\"UTF-8\" ?>
<root>
    <element attribute=\"\xCF\x83\">\xCF\x83</element>
</root>";
header('Content-Type: text/xml; charset=utf-8'); 
echo $response;

~~There is also a sigma (σ) character in ISO-8859-7 and Windows-1253 (xF3) - but I doubt that this will help you.~~

ISO-8859-7和Windows-1253(xF3)中还有一个sigma(σ)字符 - 但我怀疑这对你有帮助。

~~Third option would be to specify some kind of mathematical symbol font that maps the sigma (σ) to some other character.~~

第三种选择是指定某种数学符号字体,将西格玛(σ)映射到其他字符。

#3

"\x1F" will work for regular ASCII characters, but I think sigma is a unicode character, so you're going to have to use something like utf8_encode. PHP has poor Unicode support.

“\ x1F”适用于常规ASCII字符,但我认为sigma是一个unicode字符,所以你将不得不使用像utf8_encode这样的东西。 PHP的Unicode支持很差。

#4

For FusionCharts, to show small sigma in the chart, please use %CF%83. Put this percentage encoded form in a php string. I have tried this. It works. Also check the documentation pages on using special characters here: http://www.fusioncharts.com/docs/Contents/SpChar_Euro.html http://www.fusioncharts.com/docs/Contents/SpChar_Pound.html etc.

对于FusionCharts,要在图表中显示小sigma,请使用%CF%83。将此百分比编码形式放在php字符串中。我试过这个。有用。另请查看有关使用特殊字符的文档页面:http://www.fusioncharts.com/docs/Contents/SpChar_Euro.html http://www.fusioncharts.com/docs/Contents/SpChar_Pound.html等。

#5

Save your .php file as utf-8 encode with bom enabled,and you can use directly a sigma character (σ).

将.php文件保存为启用了bom的utf-8编码,您可以直接使用sigma字符(σ)。

    $sXML = "<chart><set value='20' label='σ' /></chart>";
echo renderChartHTML("../FusionCharts/Column2D.swf", "", "$sXML", "myFirst", 600, 300, false);

#6

What about:

html_entity_decode('&sigma;');

PHP Manual for html_entity_decode

PHP手册html_entity_decode

#7

I could use chr(229) as well, where 229 is the ASCII code I'm looking for

我也可以使用chr(229),其中229是我正在寻找的ASCII码

#1