ID: 19943 Updated by: [EMAIL PROTECTED] Reported By: [EMAIL PROTECTED] -Status: Critical +Status: Analyzed -Bug Type: Arrays related +Bug Type: Scripting Engine problem Operating System: Win2K PHP Version: 4.3.0-dev New Comment:
The reported behaviour itself is not a bug (see http://lists.php.net/article.php?group=php.dev&article=90522 for detail), but the memory leaks imply another bug. So I decided to reclassify this as Scripting Engine problem, and change the status to "Analyzed". Anyway thank you for the bug report! -- Moriyoshi Previous Comments: ------------------------------------------------------------------------ [2002-10-30 07:30:05] [EMAIL PROTECTED] I think this is pretty much invalid. [EMAIL PROTECTED] posted 2 examples. Only 1 is correct, or infact, valid code. In the first example, you have the following 2 array assignments. $ragged[$count] = 'single '.$count; $ragged[$count]['idx'] = 'ragged '.$count; In this, you assign a string to $ragged[$count], then, you turn it into an array using $regged[$count]['idx']. This is invlaid in most languages. In the $ragged[$count], $ragged['idx'][$count] method, no type changes are taking place. ------------------------------------------------------------------------ [2002-10-16 22:51:14] [EMAIL PROTECTED] A pretty interesting bug this is, there appear to be 2 possible behaviours that can happen here and only 1 is correct. <?php $ar = array(); for ( $count = 0; $count < 10; $count++ ) { $ar[$count] = "$count"; $ar[$count]['idx'] = "$count"; } for ( $count = 0; $count < 10; $count++ ) { echo $ar[$count]." -- ".$ar[$count]['idx']."\n"; } ?> The code above will output: t 0 -- t t 1 -- t t 2 -- t t 3 -- t t 4 -- t t 5 -- t t 6 -- t t 7 -- t t 8 -- t t 9 -- t /home/rei/PHP_CVS/php4/Zend/zend_operators.c(1008) : Freeing 0x08369384 (6 bytes), script=a.php Last leak repeated 9 times If the " around the $count variable are removed then the script reports: Warning: Cannot use a scalar value as an array in /home/rei/PHP_CVS/php4/a.php on line 7 /home/rei/PHP_CVS/php4/a.php(7) : Warning - Cannot use a scalar value as an array for every assignment and does no initialize any of the $ar[$count]['idx'] values. ------------------------------------------------------------------------ [2002-10-16 19:54:16] [EMAIL PROTECTED] However, the following codes does work, even though the array is still ragged: <? $ragged = array(); for ( $count = 0; $count < 10; $count++ ) { $ragged['idx'][$count] = 'ragged '.$count; $ragged[$count] = 'single '.$count; } ?> <html><head></head><body> <table border="1"> <tr> <td>Expected</td><td>Actual</td> <td>Expected IDX</td><td>Actual IDX</td> </tr> <? for ( $count = 0; $count < 10; $count++ ) { ?> <tr> <td> <?= 'single '.$count ?> </td><td> <?= $ragged[$count] ?> </td> <td> <?= 'ragged '.$count ?> </td><td> <?= $ragged['idx'][$count] ?> </td> </tr> <? } ?> </table></body></html> ------------------------------------------------------------------------ [2002-10-16 19:50:57] [EMAIL PROTECTED] When using an array that has ragged indices, the value in the array is undefined. Well, actually it can be defined, but it is unexpected. No errors or warnings are reported. Sample Code: <? $ragged = array(); for ( $count = 0; $count < 10; $count++ ) { $ragged[$count] = 'single '.$count; $ragged[$count]['idx'] = 'ragged '.$count; } ?> <html><head></head><body> <table border="1"> <tr> <td>Expected</td><td>Actual</td> <td>Expected IDX</td><td>Actual IDX</td> </tr> <? for ( $count = 0; $count < 10; $count++ ) { ?> <tr> <td> <?= 'single '.$count ?> </td><td> <?= $ragged[$count] ?> </td> <td> <?= 'ragged '.$count ?> </td><td> <?= $ragged[$count]['idx'] ?> </td> </tr> <? } ?> </table></body></html> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=19943&edit=1
