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<?php
namespace Maphper\Lib;
//Replaces dates in an object graph with \DateTime instances
class DateInjector {
private $processCache;
public function replaceDates($obj, $reset = true) {
//prevent infinite recursion, only process each object once
if ($this->checkCache($obj, $reset)) return $obj;
if ($this->isIterable($obj)) foreach ($obj as &$o) $o = $this->replaceDates($o, false);
if ($this->isPossiblyDateString($obj)) $obj = $this->tryToGetDateObjFromString($obj);
return $obj;
}
private function tryToGetDateObjFromString($obj) {
try {
$date = new \DateTime($obj);
if ($date->format('Y-m-d H:i:s') == substr($obj, 0, 20) || $date->format('Y-m-d') == substr($obj, 0, 10)) $obj = $date;
catch (\Exception $e) { //Doesn't need to do anything as the try/catch is working out whether $obj is a date
private function isIterable($obj) {
return is_array($obj) || (is_object($obj) && ($obj instanceof \Iterator));
private function isPossiblyDateString($obj) {
return is_string($obj) && isset($obj[0]) && is_numeric($obj[0]) && strlen($obj) <= 20;
private function checkCache($obj, $reset) {
if ($reset) $this->processCache = new \SplObjectStorage();
if (!is_object($obj)) return false;
if ($this->processCache->contains($obj)) return $obj;
else $this->processCache->attach($obj, true);
return false;
Level-2 /
Maphper
