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- <!doctype html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <title>Double Rakiya Numbers</title>
- </head>
- <body>
- <form action="" method="get">
- <input type="number" name="number1" value="5"/>
- <input type="number" name="number2" value="8"/>
- <input type="submit" value="Submit"/>
- </form>
- <?php
- function isRakiyaNumber($numberString) {
- for ($i = 0; $i < strlen($numberString) - 1; $i++) {
- $couple = $numberString[$i] . $numberString[$i + 1];
- for ($j = $i + 2; $j < strlen($numberString) - 1; $j++) {
- $secondCouple = $numberString[$j] . $numberString[$j + 1];
- if ($couple == $secondCouple) {
- return true;
- }
- }
- }
- return false;
- }
- if (isset($_GET['number1']) && isset($_GET['number2'])) {
- $number1 = (int) $_GET['number1'];
- $number2 = (int) $_GET['number2'];
- echo htmlentities("<ul>");
- echo "</br>";
- for ($i = $number1; $i <= $number2; $i++) {
- if (isRakiyaNumber((string)$i)) {
- echo htmlentities('<li>' . '<span class="rakiya">' . $i . '</span>' . '<a href="view.php?id='. $i . '">View</a>' . '</li>' );
- echo "</br>";
- }
- else {
- echo htmlentities('<li>' . '<span class="num">' . $i . '</span>' . '</li>' );
- echo "<br>";
- }
- }
- echo htmlentities('</ul>');
- }
- ?>
- </body>
- </html>
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