PHP random decimal between two decimals with step 0.5

Question

I want to create random number between two decimal numbers with step 0.5.

Examples: 0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, ...

Use PHP To Generate Random Decimal Beteween Two Decimals

So far I can generate numbers between 0 and 5 with one decimal comma.

How to integrate step 0.5?

$min = 0;
$max = 5;
$number = mt_rand ($min * 10, $max * 10) / 10;

Answer 1

This should work for you:

$min = 0;
$max = 5;
echo $number = mt_rand($min * 2, $max * 2) / 2;

Answer 2

Another possible way:

function decimalRand($iMin, $iMax, $fSteps = 0.5)
{
    $a = range($iMin, $iMax, $fSteps);

    return $a[mt_rand(0, count($a)-1)];
}