diff --git a/NEWS b/NEWS
index 357ed744c4e..aa13a093749 100644
--- a/NEWS
+++ b/NEWS
@@ -22,6 +22,7 @@
   (Adam)
 - Fixed bug #52674 (FPM Status page returns inconsistent Content-Type headers).
   (fat)
+- Fixed bug #52668 (Iterating over a dateperiod twice is broken). (Derick)
 - Fixed bug #52654 (mysqli doesn't install headers with structures it uses).
   (Andrey)
 - Fixed bug #52636 (php_mysql_fetch_hash writes long value into int). 
diff --git a/ext/date/lib/timelib.c b/ext/date/lib/timelib.c
index 727e6671b99..528c89d63a1 100644
--- a/ext/date/lib/timelib.c
+++ b/ext/date/lib/timelib.c
@@ -46,6 +46,19 @@ timelib_rel_time* timelib_rel_time_ctor(void)
 	return t;
 }
 
+timelib_time* timelib_time_clone(timelib_time *orig)
+{
+	timelib_time *tmp = timelib_time_ctor();
+	memcpy(tmp, orig, sizeof(timelib_time));
+	if (orig->tz_abbr) {
+		tmp->tz_abbr = strdup(orig->tz_abbr);
+	}
+	if (orig->tz_info) {
+		tmp->tz_info = orig->tz_info;
+	}
+	return tmp;
+}
+
 timelib_rel_time* timelib_rel_time_clone(timelib_rel_time *rel)
 {
 	timelib_rel_time *tmp = timelib_rel_time_ctor();
diff --git a/ext/date/lib/timelib.h b/ext/date/lib/timelib.h
index 81d5b8b1c1a..c79fa9a4699 100644
--- a/ext/date/lib/timelib.h
+++ b/ext/date/lib/timelib.h
@@ -109,6 +109,7 @@ timelib_rel_time* timelib_rel_time_clone(timelib_rel_time *tz);
 timelib_time* timelib_time_ctor(void);
 void timelib_time_set_option(timelib_time* tm, int option, void* option_value);
 void timelib_time_dtor(timelib_time* t);
+timelib_time* timelib_time_clone(timelib_time* orig);
 
 timelib_time_offset* timelib_time_offset_ctor(void);
 void timelib_time_offset_dtor(timelib_time_offset* t);
diff --git a/ext/date/php_date.c b/ext/date/php_date.c
index 95927949b86..86629618f5b 100644
--- a/ext/date/php_date.c
+++ b/ext/date/php_date.c
@@ -1822,7 +1822,7 @@ static int date_period_it_has_more(zend_object_iterator *iter TSRMLS_DC)
 {
 	date_period_it *iterator = (date_period_it *)iter;
 	php_period_obj *object   = iterator->object;
-	timelib_time   *it_time = object->start;
+	timelib_time   *it_time = object->current;
 
 	/* apply modification if it's not the first iteration */
 	if (!object->include_start_date || iterator->current_index > 0) {
@@ -1834,7 +1834,7 @@ static int date_period_it_has_more(zend_object_iterator *iter TSRMLS_DC)
 	}
 
 	if (object->end) {
-		return object->start->sse < object->end->sse ? SUCCESS : FAILURE;
+		return object->current->sse < object->end->sse ? SUCCESS : FAILURE;
 	} else {
 		return (iterator->current_index < object->recurrences) ? SUCCESS : FAILURE;
 	}
@@ -1847,7 +1847,7 @@ static void date_period_it_current_data(zend_object_iterator *iter, zval ***data
 {
 	date_period_it *iterator = (date_period_it *)iter;
 	php_period_obj *object   = iterator->object;
-	timelib_time   *it_time = object->start;
+	timelib_time   *it_time = object->current;
 	php_date_obj   *newdateobj;
 
 	/* Create new object */
@@ -1895,6 +1895,10 @@ static void date_period_it_rewind(zend_object_iterator *iter TSRMLS_DC)
 	date_period_it   *iterator = (date_period_it *)iter;
 
 	iterator->current_index = 0;
+	if (iterator->object->current) {
+		timelib_time_dtor(iterator->object->current);
+	}
+	iterator->object->current = timelib_time_clone(iterator->object->start);
 	date_period_it_invalidate_current(iter TSRMLS_CC);
 }
 /* }}} */
@@ -2335,6 +2339,10 @@ static void date_object_free_storage_period(void *object TSRMLS_DC)
 		timelib_time_dtor(intern->start);
 	}
 
+	if (intern->current) {
+		timelib_time_dtor(intern->current);
+	}
+
 	if (intern->end) {
 		timelib_time_dtor(intern->end);
 	}
@@ -3713,6 +3721,7 @@ PHP_METHOD(DatePeriod, __construct)
 	}
 
 	dpobj = zend_object_store_get_object(getThis() TSRMLS_CC);
+	dpobj->current = NULL;
 
 	if (isostr_len) {
 		date_period_initialize(&(dpobj->start), &(dpobj->end), &(dpobj->interval), (int*) &recurrences, isostr, isostr_len TSRMLS_CC);
@@ -3754,14 +3763,7 @@ PHP_METHOD(DatePeriod, __construct)
 		/* end date */
 		if (end) {
 			dateobj = (php_date_obj *) zend_object_store_get_object(end TSRMLS_CC);
-			clone = timelib_time_ctor();
-			memcpy(clone, dateobj->time, sizeof(timelib_time));
-			if (dateobj->time->tz_abbr) {
-				clone->tz_abbr = strdup(dateobj->time->tz_abbr);
-			}
-			if (dateobj->time->tz_info) {
-				clone->tz_info = dateobj->time->tz_info;
-			}
+			clone = timelib_time_clone(dateobj->time);
 			dpobj->end = clone;
 		}
 	}
diff --git a/ext/date/php_date.h b/ext/date/php_date.h
index dc14790f0f9..7f3f7fa4ef4 100644
--- a/ext/date/php_date.h
+++ b/ext/date/php_date.h
@@ -139,6 +139,7 @@ struct _php_interval_obj {
 struct _php_period_obj {
 	zend_object       std;
 	timelib_time     *start;
+	timelib_time     *current;
 	timelib_time     *end;
 	timelib_rel_time *interval;
 	int               recurrences;
diff --git a/ext/date/tests/bug52668.phpt b/ext/date/tests/bug52668.phpt
new file mode 100644
index 00000000000..307a4264dd7
--- /dev/null
+++ b/ext/date/tests/bug52668.phpt
@@ -0,0 +1,25 @@
+--TEST--
+Bug #52668 (Iterating over a dateperiod twice is broken)
+--INI--
+date.timezone=UTC
+--FILE--
+<?php
+$start    = new DateTime('20101212');
+$interval = DateInterval::createFromDateString('next day');
+$dp = new DatePeriod($start, $interval, 1);
+foreach($dp as $dt) {
+    echo $dt->format('r') . "\n"; // Sun, 12 Dec 2010 00:00:00 +0100
+}
+echo $start->format('r'), "\n";
+foreach($dp as $dt) {
+    echo $dt->format('r') . "\n"; // Sun, 12 Dec 2010 00:00:00 +0100
+}
+echo $start->format('r'), "\n\n";
+?>
+--EXPECT--
+Sun, 12 Dec 2010 00:00:00 +0000
+Mon, 13 Dec 2010 00:00:00 +0000
+Sun, 12 Dec 2010 00:00:00 +0000
+Sun, 12 Dec 2010 00:00:00 +0000
+Mon, 13 Dec 2010 00:00:00 +0000
+Sun, 12 Dec 2010 00:00:00 +0000