How can the header function be used to set the character encoding in PHP applications?
To set the character encoding in PHP applications, the `header` function can be used to send an HTTP header with the appropriate charset parameter. This ensures that the browser interprets the text in the correct character encoding, such as UTF-8, which is commonly used for web content. By setting the character encoding in this way, it helps prevent issues with displaying special characters or symbols on the webpage.
header('Content-Type: text/html; charset=UTF-8');
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