mb_output_handler()

mb_output_handler() — Callback function converts character encoding in output buffer.

Built-in function of PHP 8.5. The manual lists it as available in PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

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

Signature

mb_output_handler(string $string, int $status): string

Parameters

Parameter	Type	What it takes
$string	string	The contents of the output buffer.
$status	int	The status of the output buffer.

Return value

The converted string.

Example

A runnable snippet:

mb_http_output("UTF-8"); ob_start("mb_output_handler");