How can I create a special character in PHP from a variable?

Asked by Vincentt (8094

) November 16th, 2007

Hi,

In PHP, if I have

$var = ‘AA’;

I want to be able to achieve the same result as I would have when doing

echo ”\xAA”;

Which would output ª
I tried doing

echo ”\x$var”;

But that only literally outputted the string (\xAA), instead of ª what I wanted. Any ideas how I can do it?

Thanks.

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3 Answers

After playing around with PHP’s eval function for a while, I’ve concluding that doing what you’re trying to do is impossible.

The problem is that ’\xAA’ is a single character. It can’t be split in to parts in the same way that the Unicode character ‘a’ can’t be split into parts.

sferik (6121

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OK… Then do you know ig there is any way to create all characters possible with the following regex?

\x[0–9A-Fa-f]{1,2}

Without, of course, just taking all characters?

Vincentt (8094

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Never mind, I found out I can’t do what I wanted to do because normal letters and numbers also have their equivalents, and since I was replacing the special characters with their code that would continue forever…

Vincentt (8094

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