How does PhP internally represent string?

Posted by Jim Thio on Programmers See other posts from Programmers or by Jim Thio
Published on 2012-06-02T14:41:03Z Indexed on 2012/06/02 16:48 UTC
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php

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strings

UTF8?

UTF16?

Does the string in PhP also keep tracks the encoding used for that string?

A good answer would give me a sample of

Let's look at this script for example.

Say I do

$original = "??????????????";

What actually happen?

Obviously I think $original will not contain just 7 characters. Those glyps must each be represented by several bytes there.

Then I do

$converted= mb_convert_encoding ($original , "UTF-8")

What will happen to $converted? How will $converted be different than $original?

Will it be just the exact same byte sequence with $original but with different encoding?

Or what?

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