/**
* Internal function which generates regex pattern from date pattern
*
* @param string $dateformat
* @return string
*/
public static function generatePattern($dateformat)
{
$k = 0;
$datearray = preg_split("//", $dateformat);
$patternkey = array();
self::$patrVal = "";
for ($i = 0; $i < count($datearray); $i++) {
if (isset($datearray[$i - 1]) && $datearray[$i - 1] == "@") {
$patternkey[$i] = $datearray[$i];
} elseif ($datearray[$i] == "@") {
$patternkey[$i] = "";
} elseif ($datearray[$i] == " ") {
$patternkey[$i] = " ";
} elseif (in_array($datearray[$i], array_keys(self::$types))) {
$patternkey[$i] = self::$types[$datearray[$i]];
self::$patrVal[$k] = array_search($datearray[$i], array_keys(self::$types));
$k++;
} else {
$patternkey[$i] = $datearray[$i];
}
}
$patternkey = implode("", $patternkey);
return "/" . $patternkey . "/";
}
