Question: We
have to ask user to enter number1 and number2 he/she wants, and find the prime numbers between that range which is entered by users?
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>Find Prime numbers</title>
</head>
<body>
<h1><center>Find Prime numbers</center></h1>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
Enter Value1:<input type="text" name="min">
Enter Value2:<input type="text" name="max">
<input type="submit" name="submit" value="OK">
</form>
<?php
if (isset($_POST['submit'])) {
$min = $_POST['min'];
$max = $_POST['max'];
if ($min == $max) {
echo "Enter different value ";
} else {
if ($min > $max) {
$t = $min;
$min = $max;
$max = $t;
}
function get_prime($min, $max) {
$primes = array();
for ($x = $min; $x <= $max; $x++) {
if ($x == 2) {
$primes[] = $x;
}
for ($i = 2; $i < $x; $i++) {
$r = $x % $i;
if ($r == 0) {
break;
}
if ($i == $x - 1) {
$primes[] = $x;
}
}
}
if ($primes == NULL) {
echo "No prime numbers found";
} else {
echo "Total ". count($primes) ." prime numbers:";
echo implode(",", $primes);
}
}
get_prime($min, $max);
}
}
?>
</body>
</html>
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