How to make 5 random numbers with sum of 100

Question

do you know a way to split an integer into say... 5 groups. Each group total must be at random but the total of them must equal a fixed number.

for example I have \"

Answer 1

$number = 100;
$numbers = array();
$iteration = 0;
while($number > 0 && $iteration < 5) {
    $sub_number = rand(1,$number);
    if (in_array($sub_number, $numbers)) {
        continue;
    }
    $iteration++;
    $number -= $sub_number;
    $numbers[] = $sub_number;    
} 

if ($number != 0) {
    $numbers[] = $number;
}

print_r($numbers);