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<!DOCTYPE html>
<html>
<body>
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
krsort($age);
foreach($age as $x=>$x_value)
   {
   echo "Key=" . $x . ", Value=" . $x_value;
   echo "<br>";
   }
?>
</body>
</html>
Key=Peter, Value=35
Key=Joe, Value=43
Key=Ben, Value=37