usage of "mbstring.script_encoding" config

Question

What is the usage of "mbstring.script_encoding" config? Is it diffrent from mbstring.internal_encoding?

http://php.net/manual/en/mbstring.configuration.php

Answer 1

It is zend.script_encoding now. Let me show you an example.

I have a script written in CP1251.

// script encoded as ANSI. var_dump() says false
var_dump(mb_check_encoding('Кириллица', 'UTF-8'));

$input = $_GET['internalInput'];
var_dump(mb_check_encoding($input, 'UTF-8'));

In my INIes I already have the config:

mbstring.encoding_translation = On
mbstring.internal_encoding = UTF-8

Script test

bool(false) 
bool(true)

Where $input is a Cyrillic string %D0%F3%F1%F1%EA%E8%E9.

---

Now let us change configuration for script encoding. In php.ini (or in another INIes. It depends on your sys config) you can find lines like

; If enabled, scripts may be written in encodings that are incompatible with
; the scanner.  CP936, Big5, CP949 and Shift_JIS are the examples of such
; encodings.  To use this feature, mbstring extension must be enabled.
; Default: Off
zend.multibyte = On

; Allows to set the default encoding for the scripts.  This value will be used
; unless "declare(encoding=...)" directive appears at the top of the script.
; Only affects if zend.multibyte is set.
; Default: ""
zend.script_encoding = CP1251

By default all these lines are commented. Here I set multibyte to On and script encoding to CP1251. Do a test again.

Script test

bool(true) 
bool(true)

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So... we just easily migrated to UTF-8 :)