What role does the HTTP header play in displaying special characters correctly in PHP?

Special characters may not display correctly in PHP if the HTTP header is not set to specify the character encoding. To ensure special characters are displayed properly, you can set the HTTP header to specify the character encoding as UTF-8. This can be done using the header() function in PHP. 

<?php
header('Content-Type: text/html; charset=utf-8');
?>

Keywords

HTTP header special characters PHP encoding UTF-8

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