try using usort() instead of uksort() - (i haven't checked the manual but) I believe uksort is for sorting based on the keys and not the values, which is what you're trying to do
-----Original Message----- From: Bloom, Chris [mailto:[EMAIL PROTECTED]] Sent: Tuesday, April 02, 2002 9:57 AM To: '[EMAIL PROTECTED]' Cc: Bloom, Chris Subject: [PHP] Sorting Multi-Dimensional Arrays using uksort() Hey folks: I have a function that returns an array. I'm assigning the returned array to a variable inside another function: ---------- $dirs = getFileArray($parentDir,"title_2.txt"); ---------- If I use print_r() on the variable it writes out as expected: ---------- Array ( [0] => Array ( [folderName] => 97StudioPhotos [linkText] => Studio 3/27 - 3/30 (by Matt Myrdal/VE) [sortDate] => 03/31/02 ) [1] => Array ( [folderName] => 98PromoPhotos [linkText] => Promo Photos BW (by Matt Myrdal - 3/24/02) [sortDate] => 03/24/02 ) [2] => Array ( [folderName] => 99PhotoSet1 [linkText] => Photo Set I (by Matt Myrdal - 3/12/02) [sortDate] => 03/12/02 ) ) ---------- Now I want to sort this array using a custom defined sort method: ---------- uksort($dirs,"sortByDateDesc"); function sortByDateDesc($a,$b) { print "<hr>a = <br>"; print_r($a); print "<hr>"; print "<hr>b = <br>"; print_r($b); print "<hr>"; print $a." vs ".$b."<br>"; if ($a[sortDate] > $b[sortDate]){ print " ".$a[sortDate]." > ".$b[sortDate]."<br>"; return -1; } else if ($a[sortDate] < $b[sortDate]){ print " ".$a[sortDate]." < ".$b[sortDate]."<br>"; return 1; } else { print " ".$a[sortDate]." = ".$b[sortDate]."<br>"; return 0; } } ---------- As you can see, I've added a bunch of print() calls for testing. The trouble is that none of the variables are being output into the print functions and all of the print_r() calls just return "1". In the end, the array is not being sorted at all. Why can't I access any of the array elements in this function and why won't it sort correctly? I've tried accessing the elements everyway I can think of: $a[sortDate] $a["sortDate"] $a[2] Regards, Chris Bloom PS: Attached is an example file <<arr_sort_test.php>> Web Infrastructure Analyst Lifespan Corporate Services 167 Point Street #245 Providence, RI 02903 401-444-2074 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
