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element121/valid_numbers.php

Created June 7, 2016 22:45
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valid_numbers.php
<?php
if (isset($_POST['number']))
{
// Grab the POSTed number input field
$number = $_POST['number'];
$number_range = $_POST['number_range'];
// Use filter_var to check if the value is a valid number
if (filter_var($number, FILTER_VALIDATE_INT) === false) {
echo("$number is not a valid number");
} else {
echo("$number is a valid number");
}
$min = 1;
$max = 10;
$options = array("options" => array("min_range"=>$min, "max_range"=>$max));
// Use filter_var to check if the number is valid and within the range
if (filter_var($number_range, FILTER_VALIDATE_INT, $options) === false) {
echo("<br>$number_range is not a valid number");
} else {
echo("<br>$number_range is within the range");
}
}
?>
<!DOCTYPE html>
<body>
<form action="" method="POST">
Number:
<input type="number" name="number" required><br>
Number range:
<input type="number" min="1" max="10" name="number_range" required><br>
<input type="submit">
</form>
</body>
</html>
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