#46596 [Tbd]: Setting an associative array $var with the key $var: $var[$var] = true

ID: 46596 Updated by: seld@php.net Reported By: benjaminNOpickSPAM at web dot de Status: To be documented Bug Type: Documentation problem Operating System: * PHP Version: 5CVS, 6CVS (2008-11-24) New Comment: I can't think of a sane place or way to describe this in the docs. It's clearly specified that strings support the square brackets already, therefore I'd recommend closing as Bogus. Previous Comments: ------------------------------------------------------------------------ [2009-01-28 23:06:38] jani@php.net You're quite right there. Reclassified. ------------------------------------------------------------------------ [2008-11-24 19:48:43] lbarnaud@php.net Jani, this seems to be an expected behavior. The code basically does $var[0] = "1"; And $var becomes "1xxxx". ------------------------------------------------------------------------ [2008-11-18 23:31:33] jani@php.net This is just side-effect of the fact that [] is also used for strings. It's not just for arrays. ------------------------------------------------------------------------ [2008-11-17 17:20:40] benjaminNOpickSPAM at web dot de Description: ------------ As the following lines are ok: $var = $var + 1; $var[trim($var2)] = ''; I expected PHP to first evaluate the $key-String ([$var]), then modify $var. So a line like: $var = 'a'; $var[$var] = 0; should work. Reproduce code: --------------- <?php $var = 'xxxxx'; $var[$var] = true; var_dump($var); ?> Expected result: ---------------- array(1) { ["xxxxx"]=> bool(true) } or a warning like: Warning: Cannot use a scalar value as an array Actual result: -------------- string(5) "1xxxx" Depending on what code was before it, or what was in $var before, the first character is not always '1'. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=46596&edit=1