PHP random number generator ff

Yes it is strange, do you solve your problem? You may can multiply your max by 1.1 but I think I don’t really understand your problem…

how about using a built in function???
rand(lowest number,highest number);
so basicly

<?php  
// if its between 0 and 1854524  
$random_number = rand(0,1854528);  
// do what ever you want with your random number  
?>  

if you want a set of random numbers that you do not want replectaed
it can be done this way

<?php  
$randoms = array();  
// if its between 0 and 1854524  
$random_number = rand(0,1854528);  
//if you want a set of 10  
for($looper = 0;$looper<10;$looper++)  
{  
    if(!in_array($random_number,$randoms))  
    {  
        $randoms[] = $random_number;  
    }  
}  
?>  

@Pinkponyprincess: The problem may come from the digits, right? I just can’t figure out how your function worked and made 1000 become the maximum of 1100.

[quote=ADIGA]if you want a set of random numbers that you do not want replectaed
it can be done this way[…][/quote]
1) This way will just put one number in the array as $random_number is computed only once.
2) Even if the rand number was recomputed, this won’t also enforce 10 values but a range between 1 and 10
I guess it wasn’t your purpose !
Here is a possible way to do:
$randoms = array(); // If you want a set of 10 $maxNumber = 10; // Define min and max rand's values for granularity $minRand = 0; $maxRand = 1854528; while ($maxNumber > 0) { // Recompute the random number $random_number = rand($minRand, $maxRand); if (!in_array($random_number, $randoms)) { $randoms[] = $random_number; // One number has been set, we can decrease the amount of value we need. --$maxNumber; } }
Note:
- the “while” part should be embed in a function and by then be reusable else where ~
- “rand” is actually an existing function in php, don’t forget to update it by yours ~

Thanks Memoria, wrong location of rand function.

```<?php
$randoms = array();
// if its between 0 and 1854524

//if you want a set of 10
for($looper = 0;$looper<10;$looper++)
{

$random_number = rand(0,1854528); //<—– :P

if(!in_array($random_number,$randoms))  
{  
    $randoms[] = $random_number;  
}  

}
?>```

you’re updated code still not giving a set of 10 unique random numbers =p

```<?php
$randoms = array();
// if its between 0 and 1854524

//if you want a set of 10
for($looper = 0;$looper<10;$looper++)
{

$random_number = rand(0,1854528); //<—– :P

if(!in_array($random_number,$randoms))  
{  
    $randoms[] = $random_number;  
}  

}

print_r($randoms);
?>```

try running it and see what you get :)

output samples

Array ( [0] => 1601479 [1] => 534454 [2] => 426594 [3] => 1149070 [4] => 903623 [5] => 254567 [6] => 703236 [7] => 953637 [8] => 1443417 [9] => 382292 )

Array ( [0] => 112306 [1] => 1478919 [2] => 397178 [3] => 1018657 [4] => 1050485 [5] => 869085 [6] => 91333 [7] => 1142748 [8] => 653334 [9] => 1578977 )

Array ( [0] => 117888 [1] => 1726791 [2] => 1470937 [3] => 73707 [4] => 1476876 [5] => 652197 [6] => 1415231 [7] => 78266 [8] => 630534 [9] => 743751 )

Your code is “working” only because the max rand you’re using is set high enough to not get this error coming out.
Just set it to 10 for example and you won’t have an array of 10 values :).