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<!DOCTYPE html> <html> <body> <?php // Variable to check $url="https://www.xn--w3schools-8taa.com/"; // Encode characters and remove all characters with ASCII value > 127 $url = filter_var($url, FILTER_SANITIZE_ENCODED, FILTER_FLAG_STRIP_HIGH); echo $url; ?> </body> </html>
https%3A%2F%2Fwww.w3schools.com