(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
mb_output_handler — Callback function converts character encoding in output buffer
$string, int $status): stringmb_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.
stringThe contents of the output buffer.
statusThe status of the output buffer.
The converted string.
Example #1 mb_output_handler() example
<?php
mb_http_output("UTF-8");
ob_start("mb_output_handler");
?>
Note:
If you want to output binary data, such as an image, a Content-Type: header must be set using header() before any binary data is sent to the client (e.g. header("Content-Type: image/png")). If Content-Type: header is sent, output character encoding conversion will not be performed.
Note that if 'Content-Type: text/*' is sent, the content body is regarded as text; conversion will take place.