Random Number

[smithmr8]

Hi,

I'd like to know how to generate random numbers between the values 0.100 and 1.000

 

The number must be 3 decimal places.

 

Thanks

[woobarb]

Probably an easier way but here's one:

$n = rand(100, 1000);
$n /= 1000;
$n = sprintf("%0.3f", $n);
print $n;

[smithmr8]

Works like a charm. Thanks alot. 

[logicopinion]

<?php

 

function rand_img($lenght=5)

{

$number = "";

for ($i = 1; $i <= $lenght; $i++)

{

    $number .= rand(0,9)."";

}

 

$width = 11*$lenght;

$height = 30;

$img = ImageCreate($width, $height);

$background = imagecolorallocate($img,255,255,255);

$color_black = imagecolorallocate($img,0,0,0);

$color_grey = imagecolorallocate($img,169,169,169);

imagerectangle($img,0, 0,$width-1,$height-1,$color_grey);

imagestring($img, 5, $lenght, 7, $number, $color_black);

header('Content-Type: image/png');

imagepng($img);

imagedestroy($img);

 

}

 

rand_img();

 

?>

[Fadion]

woobarb solution works correctly, but anyway here's a solution i found on php.net and added only the sprintf():

 

<?php
function random_float($min,$max){
   return sprintf("%0.3f", ($min+lcg_value()*(abs($max-$min))));
}
echo random_float(0.01, 1);
?>