l108/7.3.php

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <?php echo naarCelsius(20); function naarCelsius($gradenf){ return ($gradenf - 32) * (5/9); } ?> </body> </html>

Resultaat

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