Question: We
have to ask user to enter number he/she wants, and give output whether its prime number or not?
Answer: Copy the below code and paste it into "your.php" file. After done this you will just need to run "your.php" file in browser and you will get the output successfully.
Answer: Copy the below code and paste it into "your.php" file. After done this you will just need to run "your.php" file in browser and you will get the output successfully.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Prime number</title>
</head>
<body>
<h1><center>Prime number</center></h1>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
Enter number:
<input type="text" name="num" />
<input type="submit" name="submit" value="OK" />
</form>
<?php
if (isset($_POST['submit'])) {
$num = $_POST['num'];
if ($num == 0) {
echo $num . " is special number";
} elseif ($num == 1) {
echo $num . " is special number";
} else {
$c = 0;
for ($i = 2; $i < $num; $i++) {
if ($num % $i == 0) {
$c++;
break;
}
}
if ($c) {
echo $num . " is not prime number";
}
else
echo $num . " is prime number";
}
}
?>
</body>
</html>
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