使用php将特殊字符转换为ISO Latin-1代码？

Question

Follow up on this post I made earlier on.

I found out XML actually takes numeric codes instead of name codes when dealing with special characters. So I have looked through online on how to convert special characters into numberic codes, but I haven't got any lucks.

Do I have to write a function to do this task or does php come with any default function which can save up lots of works?

For instance, I want to convert á to á but not á to á

Is it possible?

Please help if you have any ideas.

EDIT:

I am using this suggestion to convert the special chars into numberic chars,

$txt = preg_replace('/([\x80-\xff])/e', "'&#' . ord('$1') . ';'", $txt);

but I just found out that it does not convert these 5 special chars into numberic codes - <, >, &, ' and ".

How can I get around them?

Thanks.

Answer 1

The generic approach is to use:

$txt = preg_replace('/([\x80-\xff])/e', "'&#' . ord('$1') . ';'", $txt);

You must ensure that $txt does indeed contain Latin-1 already (utf8_decode), because you'd otherwise receive the wrong value from the string byte.