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# mb_output_handler

(PHP 4 >= 4.0.6)

mb_output_handler -- Callback function converts character encoding in output buffer

## Description

string mb_output_handler ( string contents, int status)

mb_output_handler() is ob_start() callback function. mb_output_handler() converts characters in output buffer from internal character encoding to HTTP output character encoding.

4.1.0 or later version, this hanlder adds charset HTTP header when following conditions are met:

- Does not set `Content-Type` by header()

- Default MIME type begins with `text/`

- `http_output` setting is other than pass

`contents` : Output buffer contents

`status` : Output buffer status

Return Value: String converted

Example 1. mb_output_handler() example
    mb_http_output("UTF-8");
    ob_start("mb_output_handler");

> Note: If you want to output some binary data such as image from PHP script, you must set output encoding to "pass" using mb_http_output().

See also ob_start().

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