Problem:- Validating Number Form Input
Solution:-
<?php if ($_SERVER['REQUEST_METHOD']=='GET') {?> <form action="<?php echo htmlentities($_SERVER['SCRIPT_NAME']); ?>" method="POST" > <input type="text" name="number"><br> <input type="submit" value="Show"> </form> <?php }else{ if (filter_input(INPUT_POST, 'number', FILTER_VALIDATE_INT)) { echo $_POST['number']; }else{ echo $_POST['number'], ' isn\'t a number'; } } ?>
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