Bug #75232 [Dup->ReO]: print_r creating side-effect.

Edit report at https://bugs.php.net/bug.php?id=75232&edit=1 ID: 75232 Updated by: jhdxr@php.net Reported by: ben at redsnapper dot net Summary: print_r creating side-effect. -Status: Duplicate +Status: Re-Opened Type: Bug Package: Date/time related Operating System: any PHP Version: 7.1.9 Block user comment: N Private report: N New Comment: @daverandom, bug #49382 was marked as "not a bug" because you believe that's a feature request rather than a bug. I don't think it's a good reason to close issue, but that't fine. but this issue focus on the different behaviors of $d->date before and after print_r. There is no doubt that this inconsistency is a bug. Previous Comments: ------------------------------------------------------------------------ [2017-09-22 11:41:46] daverandom@php.net Dupe of https://bugs.php.net/bug.php?id=49382 ------------------------------------------------------------------------ [2017-09-20 09:05:04] gooh@php.net For the sake of completeness, this also happens when var_dump'ing or ReflectionObject::export'ing: php > $dt = new DateTime; php > var_dump($dt); object(DateTime)#3 (3) { ["date"]=> string(26) "2017-09-20 10:57:54.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(13) "Europe/Berlin" } php > echo $dt->date; 2017-09-20 10:57:54.000000 php > $dt = new DateTime; php > ReflectionObject::export($dt); Object of class [ <internal:date> class DateTime implements DateTimeInterface ] { // some lines omitted … - Dynamic properties [3] { Property [ <dynamic> public $date ] Property [ <dynamic> public $timezone_type ] Property [ <dynamic> public $timezone ] } // some lines omitted … } php > echo $dt->date; 2017-09-20 10:57:57.000000 So it adds three public properties. ------------------------------------------------------------------------ [2017-09-20 08:38:41] ben at redsnapper dot net Description: ------------ Using print_r on a DateTime object creates a side-effect: the property 'date' is now set and publicly available. Test script: --------------- //Expected Behaviour php > $d1 = DateTime::createFromFormat("Ymd\THis\Z", '20170920T091600Z'); php > echo $d1->date; Notice: Undefined property: DateTime::$date //Unexpected Behaviour / side effect. php > $d2 = DateTime::createFromFormat("Ymd\THis\Z", '20170920T091600Z'); php > print_r($d2->date); DateTime Object ( [date] => 2017-09-20 09:16:00.000000 [timezone_type] => 3 [timezone] => UTC ) php > echo $d2->date; 2017-09-20 09:16:00.000000 Expected result: ---------------- There should be no change (side-effect) made to an object when using print_r() ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75232&edit=1