... PHP 3 <= 3.0.18, PHP 4 >= 4.0.0) asort -- Sort an array and maintain index association . void asort ( array array [, int sort_flags]) . This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. ... Example 1. asort() example . fruits = array ("d"=>"lemon", "a"=>"orange", "b"=>"banana", "c"=>"apple"); asort ($fruits); reset ($fruits); while (list ($key, $val) = each ($fruits)) { echo "$key = $val\n"; } . ... arsort . ...