Second highest number in a array
<?php
// second highest number in array using php;
$arr = [2,5,7,5,9,22,11,21];
$max = $secMax = 0;
foreach($arr as $key => $val){
if($max < $val){
$secMax = $max;
$max = $val;
}
else if (($secMax < $val) && ($max != $val) ){
$secMax = $val;
}
}
echo "max number:". $max."<br/>";
echo "Second max number:". $secMax."<br/>";
?>