function checkCircularpalindrome($string)
{
$l = strlen($string);
$str3 = $string;
for ($i = 0; $i < $l; $i++) {
$str1 = substr($str3, $i + 1, $l - $i - 1);
$str2 = substr($str3, 0, $i + 1);
$str = $str1 . $str2;
if (checkPalindrome($str)) {
return true;
}
}
return false;
}
<input type="radio" name="choice" value="hash" id="hash" />
<label for="hash">Hash String</label>
<input type="radio" name="choice" value="shuffle" id="shuffle" />
<label for="shuffle">Shuffle String</label>
<input type="submit" value="Submit" />
</form>
<?php
if (isset($_GET['input']) && isset($_GET['choice'])) {
$input = $_GET['input'];
$choice = htmlspecialchars($_GET['choice']);
switch ($choice) {
case 'palindrome':
checkPalindrome($input);
break;
case 'reverse':
echo strrev($input);
break;
case 'split':
splitString($input);
break;
case 'hash':
echo hash('md5', $input);
break;
case 'shuffle':
echo str_shuffle($input);
break;
default:
echo 'Invalid choice';
<label for="split">Split</label>
<input type="radio" id="hash" name="modifier" value="hash"/>
<label for="hash">Hash String</label>
<input type="radio" id="shuffle" name="modifier" value="shuffle"/>
<label for="shuffle">Shuffle String</label>
<input type="submit" name='submit'/>
</form>
</body>
</html>
<?php
if (isset($_GET['input']) && isset($_GET['submit'])) {
$choice = $_GET['modifier'];
switch ($choice) {
case 'palindrome':
echo checkPalindrome($_GET['input']);
break;
case 'reverse':
echo strrev($_GET['input']);
break;
case 'split':
echo splitStr($_GET['input']);
break;
case 'hash':
echo hashStr($_GET['input']);
break;
case 'shuffle':
echo str_shuffle($_GET['input']);
break;
}
}
<label for="hash">Hash String</label>
<input type="radio" name="option" id="shuffle" value="shuffle"/>
<label for="shuffle">Shuffle String</label>
<input type="submit"/>
</form>
<?php
if (isset($_POST['input']) && isset($_POST['option'])) {
$input = $_POST['input'];
$operation = $_POST['option'];
function checkPalindrome($string)
{
$initialString = strtolower(preg_replace("/[^A-Za-z0-9]/", "", $string));
return $initialString === strrev($initialString);
}
if ($operation === 'palindrome') {
$isPalindrome = checkPalindrome($input);
if ($isPalindrome === true) {
echo "{$input} is a palindrome!";
} else {
echo "{$input} is not a palindrome!";
}
}
if ($operation === 'reverse') {
echo strrev($input);
}
if ($operation === 'split') {
$input = str_split($input);
$result = implode(' ', $input);
echo $result;
}
if ($operation === 'hash') {
* @param string $string
* @return string
*/
function checkPalindrome($string)
{
$lowerStr = strtolower($string);
$revString = strrev($lowerStr);
if ($revString === $lowerStr) {
return "\"{$string}\" is a Palindrome.";
} else {
return "\"{$string}\" is not a Palindrome.";
}
}
echo checkPalindrome("racecar");
echo "<br />";
echo checkPalindrome("racecarrrrr");
?>
</p>
</div>
<div>
<h1>
5. Write some simple code that demonstrates the difference
between the == and === comparison operators
</h1>
<hr />
<p>
<?php
$a = 4;
$b = "4";
if ($a == $b) {
<input type="radio" name="action" id="split" value="split" />
<label for="split">Slpit</label>
<input type="radio" name="action" id="hash" value="hash" />
<label for="hash">Hash String</label>
<input type="radio" name="action" id="shuffle" value="shuffle" />
<label for="shuffle">Shuffle String</label>
<input type="submit" />
</form><br />
<?php
if (isset($_POST['string'], $_POST['action'])) {
$inputStr = $_POST['string'];
$action = $_POST['action'];
switch ($action) {
case 'palindrome':
$isPalindrome = checkPalindrome($inputStr);
if ($isPalindrome) {
echo htmlspecialchars($inputStr) . " is palindrome!";
} else {
echo htmlspecialchars($inputStr) . " is NOT palindrome!";
}
break;
case 'reverse':
echo htmlspecialchars(strrev($inputStr));
break;
case 'split':
$inputStr = str_split($inputStr, 1);
$inputStr = implode(' ', $inputStr);
echo htmlspecialchars($inputStr);
break;
case 'hash':
