I have an array of value series like:
$series = [100,300,500,800,1000,3000,5000,10000,15000,20000];
Another value getting from DB like:
$point = $data[‘earned_point’];
I need the highest match from the series. such as I got a value from db (1500) the highest match of the value is 1000 in the series, so I need to get the $series[4] and make it
$reward = $series[4] * 0.1;
I'll run it in a loop to do it for all the values got from DB.
I'm posting alternate code as the accepted answer while is correct can be very inefficient if you are working with a large array.
<?php
function computeReward($series, $point, $percent = 0.1){
arsort($series); // sort the series in reverse so we can pass any array and the highest number will be the first because we are looking for a number lower or equal to our point
foreach($series as $min_point){
if($min_point <= $point){
return $min_point * $percent; // return the min_point * the percentage, this stops the loop there for being more efficient
}
}
}
$series = [100,300,500,800,1000,3000,5000,10000,15000,20000];
$point = $data['earned_point'];
$reward = computeReward($series, $point);
?>
Do you mean you want to get which highest $series item is equal or less than $point ?
<?php
$series = [100,300,500,800,1000,3000,5000,10000,15000,20000];
$point = $data['earned_point'];
foreach ($series as $min_point) {
if ($point >= $min_point) {
$matched_min_point = $min_point;
}
}
$reward = $matched_min_point*0.1;
Let me know if this works for you
$reward = $series[$point] / 10