arsort -- Sort an array in reverse order and maintain index association


void arsort(array array);

This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant.

Example 1. arsort() example

$fruits = array("d"=>"lemon","a"=>"orange","b"=>"banana","c"=>"apple");
for(reset($fruits); $key = key($fruits); next($fruits)) {
    echo "fruits[$key] = ".$fruits[$key]."\n";
This example would display: fruits[a] = orange fruits[d] = lemon fruits[b] = banana fruits[c] = apple The fruits have been sorted in reverse alphabetical order, and the index associated with each element has been maintained.

See also: asort(), rsort(), ksort(), and sort().