(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
mb_output_handler — Callback function converts character encoding in output buffer
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.
stringThe contents of the output buffer.
statusThe status of the output buffer.
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.