#21788 [NEW]: array_multisort() changes array keys unexpectedly given numeric strings as keys

From: jon@inet-specialists.com Operating system: NT 4.0 SP6a PHP version: 4.3.0 PHP Bug Type: Arrays related Bug description: array_multisort() changes array keys unexpectedly given numeric strings as keys <script language="php"> /* The following code produces an unexpected result from the array_multisort() function. The indices of the arrays are are modified for the two entries in which the numeric value reaches the first position of the string index. Granted, all of the indices are numerical, and therefore may be assigned to and integer when converted; however, the expected replacement would be the integer value of the string representation. (i.e. "150014" would become 150014) In actuality, the indices "150014" and "120011" are converted to 1 and 0 respectively. Therefore, the associative array is no longer associative and the indices do not relate to the original arrays, even though the sort order is correct and the two arrays still relate to each other. */ $Category = array ( "000001" => "Personal, Master", "000002" => "Information, Gorean", "000003" => "Information, Gorean", "000004" => "Books, Information", "000005" => "Books, Information", "000006" => "Information, Gorean", "000007" => "Information, Gorean", "000008" => "Books, Information", "000009" => "Books, Information", "000010" => "Group, Offline", "000011" => "Internet, Link Collection", "120011" => "Internet, Link Exchange", "000013" => "Books, Discussion", "000014" => "Books, Discussion", "150014" => "Books, Discussion", "000015" => "Books, Discussion", "000016" => "Books, Discussion", "000017" => "Books, Discussion", "000018" => "Books, Discussion" ); $LinksStatus = array ( "000001" => "APPROVED", "000002" => "APPROVED", "000003" => "APPROVED", "000004" => "APPROVED", "000005" => "APPROVED", "000006" => "APPROVED", "000007" => "APPROVED", "000008" => "APPROVED", "000009" => "APPROVED", "000010" => "APPROVED", "000011" => "APPROVED", "120011" => "APPROVED", "000013" => "APPROVED", "000014" => "BROKEN", "150014" => "BROKEN", "000015" => "APPROVED", "000016" => "BROKEN", "000017" => "BROKEN", "000018" => "BROKEN" ); echo("<h3>Sorting these 2 arrays</h3>\n<pre>"); print_r($Category); print_r($LinksStatus); echo("</pre>"); // I DO NOT KNOW WHY THE FOLLOWING LINE REASSIGNS INDEXES OF THE ARRAY !!! array_multisort ( $Category, SORT_STRING, SORT_ASC, $LinksStatus, SORT_STRING, SORT_DESC); echo("<h3>Results in changed indices in the arrays</h3>\n<pre>"); print_r($Category); print_r($LinksStatus); echo("</pre>"); </script> -- Edit bug report at http://bugs.php.net/?id=21788&edit=1 -- Try a CVS snapshot: http://bugs.php.net/fix.php?id=21788&r=trysnapshot Fixed in CVS: http://bugs.php.net/fix.php?id=21788&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=21788&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=21788&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=21788&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=21788&r=support Expected behavior: http://bugs.php.net/fix.php?id=21788&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=21788&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=21788&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=21788&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=21788&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=21788&r=dst IIS Stability: http://bugs.php.net/fix.php?id=21788&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=21788&r=gnused