How can PHP be used to ensure that files are created and saved in UTF-8 format?

To ensure that files are created and saved in UTF-8 format using PHP, you can set the default encoding to UTF-8 before writing to the file. This can be done by using the `mb_internal_encoding()` function to set the internal character encoding to UTF-8. Additionally, you can specify the UTF-8 encoding when opening the file for writing using the `fopen()` function. 

<?php
// Set the internal character encoding to UTF-8
mb_internal_encoding('UTF-8');

// Open a file for writing in UTF-8 format
$file = fopen('example.txt', 'w,ccs=UTF-8');

// Write content to the file
fwrite($file, 'Hello, 世界!');

// Close the file
fclose($file);
?>

Related Questions