Re: Sorting Multidimensional Associative arrays

Alex, If you make $r into an array of arrays, then you can use usort() as follows. I did not try usort() with the 2-dimensional array you were using. $r=array(array("skill"=>"supervising","age"=>44,"experience"=>23) , array("skill"=>"welding","age"=>30,"experience"=>9), array("skill"=>"carpentry","age"=>60,"experience"=>39), array("skill"=>"painting","age"=>57,"experience"=>36)); function compare($a,$b) { if ($a["age"]==$b["age"]) return 0; return ($a["age"] > $b["age"]) ? -1 : 1; } usort($r,compare); for($i=0;$i<count($r);$i++) { $a=$r[$i]; echo "Skill=${a["skill"]} Age=${a["age"]} Experience=${a["experience"]}<BR >"; } which produces: Skill=carpentry Age=60 Experience=39 Skill=painting Age=57 Experience=36 Skill=supervising Age=44 Experience=23 Skill=welding Age=30 Experience=9 Regards, Carroll Barrett -----Original Message----- From: Alex V. <alex@quad.com.ar> To: php-general@lists.php.net <php-general@lists.php.net> Date: Monday, June 26, 2000 5:29 PM Subject: [PHP-GENERAL] Sorting Multidimensional Associative arrays >I'm trying to sort a multidimensional asociative array. > >The array looks like this: > >$r[$user]['skill'] >$r[$user]['age'] >$r[$user]['experience'] > >is it possible to sort this array in such way that the first key of it >(user) is the user with the highest age number and the last user is the one >with lowest age number? That is.. an descending sorting of users by their >age. > etc.