整数不通过PHP回应

I have a switch built in to set variables based on a $_POST['x'];

my echo test works on all the variables but one, and i cannot seem to find out why:

switch ($jobType) {
    case "pp":
        $jobType = "Pick Pocket"; //echo works 'Pick Pocket'
        $success = rand(1,100); //echo works - random numbers 1-100
        $threshold = 0; //echo works - '0'
        $money = rand(0-100); //changed to rand(0,100) and it works
        echo $money;
        break;
}

the echos I named work both inside the case and outside the switch except for $money. Any ideas what I am missing?

UPDATED --

switching from 1-100 to 1,100 worked - thanks everyone!

$money = rand(0-100);

it's not 0-100 should be 0,100

I believe you use the rand function incorrectly. Try replacing the dash with a coma:

$money = rand(0, 100);

From php.net: int rand ( int $min , int $max )

Also you might wanna check what value you're actually getting. I don't believe it's an integer:

$money = rand(0-100);
var_dump($money);

I get NULL in this case and a warning: WARNING rand() expects exactly 2 parameters, 1 given...

functionality of rand() function given below hope you can understand the confusion

int rand ( int $min , int $max )

min:: The lowest value to return (default: 0)

max:: The highest value to return (default: getrandmax())

Return Values:: A pseudo random value between min (or 0) and max (or getrandmax(), inclusive).

Example:

<?php
echo rand() . "
";
echo rand() . "
";

echo rand(5, 15);
?>

The above example will output something similar to:

7771
22264
11