PHP array to stars [closed] - php

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I have array with values:
7.09, 5.63 , 5.35 , ...
I'm rounding them to 0.5 with:
round(x * 2) / 2;
Now I have 7, 6, 5.5
How can I make stars by these? Max stars 5. So I need to make 5 stars = highest array value, what's then? Sorry for my bad english. I don't know what should I do.
7 - 5 stars
6 - 4.5 stars
5.5 - 4 stars

Answer 1

$mArray = array(8,2,5,1);
$biggestNumber = max($mArray);
foreach($mArray as $index => $star){
$percent = $star / $biggestNumber * 100;
$mFinalArray[$index]['number'] = $star;
$mFinalArray[$index]['stars'] = $percent / 100 * 5;
}
print_r($mFinalArray);
Output :
Array
(
[0] => Array
(
[number] => 8
[stars] => 5
)
[1] => Array
(
[number] => 2
[stars] => 1.25
)
[2] => Array
(
[number] => 5
[stars] => 3.125
)
[3] => Array
(
[number] => 1
[stars] => 0.625
)
)
Also if you want round numbers, you could change the last line from
$mFinalArray[$index]['stars'] = $percent / 100 * 5;
to
$mFinalArray[$index]['stars'] = round($percent / 100 * 5);
Example output using round :
Array
(
[0] => Array
(
[number] => 8
[stars] => 5
)
[1] => Array
(
[number] => 2
[stars] => 1
)
[2] => Array
(
[number] => 5
[stars] => 3
)
[3] => Array
(
[number] => 1
[stars] => 1
)
)

Answer 2

If you just want to get an average of your first integers, out of 5, just do a conversion (use the max to get max value = 5 stars) :
max = 7.09
a = 7.09
b = 5.63
starsA = (a/max)* 5
starsB = (b/max)* 5
and then round these values to get your stars on that 10-point scale.