public static function palindrome($input)
{
$reflector = new ReflectionClass(__CLASS__);
$parameters = $reflector->getMethod(__FUNCTION__)->getParameters();
$args = [];
foreach ($parameters as $parameter) {
$args[$parameter->name] = ${$parameter->name};
}
log_util::logFunctionStart($args);
$inputStripped = str_replace(" ", "", $input);
$intPointer1 = 0;
$intPointer2 = strlen($inputStripped) - 1;
log_util::log(LOG_LEVEL_DEBUG, "inputStripped: " . $inputStripped);
log_util::log(LOG_LEVEL_DEBUG, "intPointer1: " . $intPointer1);
log_util::log(LOG_LEVEL_DEBUG, "intPointer2: " . $intPointer2);
$isPalindrome = TRUE;
do {
$temp1 = substr($inputStripped, $intPointer1, 1);
$temp2 = substr($inputStripped, $intPointer2, 1);
log_util::log(LOG_LEVEL_DEBUG, "temp1: " . $temp1);
log_util::log(LOG_LEVEL_DEBUG, "temp2: " . $temp2);
if ($temp1 == $temp2) {
$intPointer1++;
$intPointer2--;
log_util::log(LOG_LEVEL_DEBUG, "temp1: '" . $temp1 . "' DOES equal temp2: '" . $temp2 . "', incrementing intPointer1 and decrementing intPointer2");
log_util::log(LOG_LEVEL_DEBUG, "intPointer1: " . $intPointer1);
log_util::log(LOG_LEVEL_DEBUG, "intPointer2: " . $intPointer2);
} else {
log_util::log(LOG_LEVEL_DEBUG, "temp1: '" . $temp1 . "' DOES NOT equal temp2: '" . $temp2 . "', this is not a Palindrome");
$isPalindrome = FALSE;
}
} while ($intPointer1 <= $intPointer2 && $intPointer2 >= $intPointer1 && $isPalindrome);
log_util::log(LOG_LEVEL_DEBUG, "isPalindrome: " . $isPalindrome);
return $isPalindrome;
}
private static function writePalindrome($palindrome)
{
$reflector = new ReflectionClass(__CLASS__);
$parameters = $reflector->getMethod(__FUNCTION__)->getParameters();
$args = [];
foreach ($parameters as $parameter) {
$args[$parameter->name] = ${$parameter->name};
}
log_util::logFunctionStart($args);
$pdo = lib_database::connect();
if (!empty($pdo)) {
log_util::log(LOG_LEVEL_ERROR, "pdo connection WAS NOT empty");
$stmt = $pdo->prepare("INSERT INTO palindromes (string, isPalindrome) VALUE (?, ?, ?)");
$stmt->bindParam(1, $palindrome->getString(), PDO::PARAM_INT);
$stmt->bindParam(2, $palindrome->isPalindrome(), PDO::PARAM_STR);
$stmt->execute();
} else {
log_util::log(LOG_LEVEL_ERROR, "pdo connection WAS empty");
}
$pdo = NULL;
}
