Bug #69799 [Opn->Nab]: Integer as object property. Malformed array.

Edit report at https://bugs.php.net/bug.php?id=69799&edit=1 ID: 69799 Updated by: cmb@php.net Reported by: miloslav dot hula at gmail dot com Summary: Integer as object property. Malformed array. -Status: Open +Status: Not a bug Type: Bug Package: Scripting Engine problem PHP Version: Irrelevant -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: Sorry, but your problem does not imply a bug in PHP itself. For a list of more appropriate places to ask for help using PHP, please visit http://www.php.net/support.php as this bug system is not the appropriate forum for asking support questions. Due to the volume of reports we can not explain in detail here why your report is not a bug. The support channels will be able to provide an explanation for you. Thank you for your interest in PHP. This behavior is documented: <http://php.net/manual/en/language.types.array.php#language.types.array.casting>. Usually you will want to avoid integer properties on objects. Previous Comments: ------------------------------------------------------------------------ [2015-06-11 13:37:53] miloslav dot hula at gmail dot com Description: ------------ When integer used as object's property name, conversion to array by (array) makes normally integer array keys as string. In result, isset() and array_key_exists() doesn't work on malformed array. Test script: --------------- <?php # available on http://3v4l.org/ambbi class ArrayHash extends \stdClass { public static function from(array $arr) { $obj = new static; foreach ($arr as $key => $value) { $obj->$key = $value; } return $obj; } } $one = array('abcdef' => 'xxx', '102787' => 'yyy'); $two = (array) ArrayHash::from($one); echo "# One\n"; var_dump($one); var_dump(isset($one['abcdef'])); var_dump(array_key_exists('abcdef', $one)); var_dump(isset($one[102787])); var_dump(array_key_exists(102787, $one)); var_dump(isset($one['102787'])); var_dump(array_key_exists('102787', $one)); echo "\n\n"; echo "# Two\n"; var_dump($two); var_dump(isset($two['abcdef'])); var_dump(array_key_exists('abcdef', $two)); var_dump(isset($two[102787])); var_dump(array_key_exists(102787, $two)); var_dump(isset($two['102787'])); var_dump(array_key_exists('102787', $two)); echo "\n\n"; Expected result: ---------------- # One array(2) { ["abcdef"]=> string(3) "xxx" [102787]=> string(3) "yyy" } bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) # Two array(2) { ["abcdef"]=> string(3) "xxx" ["102787"]=> string(3) "yyy" } bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) Actual result: -------------- # One array(2) { ["abcdef"]=> string(3) "xxx" [102787]=> string(3) "yyy" } bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) # Two array(2) { ["abcdef"]=> string(3) "xxx" ["102787"]=> string(3) "yyy" } bool(true) bool(true) bool(false) bool(false) bool(false) bool(false) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=69799&edit=1