Bug #70517 [Opn]: isset() on string produces invalid result

Edit report at https://bugs.php.net/bug.php?id=70517&edit=1 ID: 70517 Updated by: bwoebi@php.net Reported by: jens dot rosenthal at compcom dot de Summary: isset() on string produces invalid result Status: Open Type: Bug Package: Arrays related PHP Version: 5.5.29 Block user comment: N Private report: N New Comment: Just a quick note: Works in PHP 7 as expected, PHP 5.5 won't be fixed though as sec only currently. Previous Comments: ------------------------------------------------------------------------ [2015-09-17 08:52:56] jens dot rosenthal at compcom dot de Description: ------------ Taking the example (#2) from the documentation page of the isset-function (Example #2 isset() on String Offsets), and modifying the test to contain [0] references somewhere along the array path, you can see, that each of these references provide a 'true' result, despite this is clearly not correct (see attached script), since the first part of the array patch does not exist (so any subsequent path cannot exist either). Test script: --------------- <?php $expected_array_got_string = 'einstring'; var_dump(isset($expected_array_got_string['und'])); var_dump(isset($expected_array_got_string['und'][0])); var_dump(isset($expected_array_got_string['und'][0]['test'])); var_dump(isset($expected_array_got_string['und']['test'][1])); var_dump(isset($expected_array_got_string['und']['test'][0])); ?> Expected result: ---------------- bool(false) bool(false) bool(false) bool(false) bool(false) Actual result: -------------- bool(false) bool(true) bool(false) bool(false) bool(true) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=70517&edit=1