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Numbers - Random

Numbers - Random

by David Stanley

Creating a random number takes two commands called srand and rand. srand is a preparation command for rand. It helps rand create a truely random number. rand itself creates the random number.

<?php
srand ((double) microtime( )*1000000);
$random_number = rand( );
echo "$random_number";
?>

746666320

The value in the srand command is a number mixer, which is then passed into the actual rand command.

To make a random number within a specific range, you can add the number range in the rand command brackets. This example will find a number between 0 and 10:

<?php
srand ((double) microtime( )*1000000);
$random_number = rand(0,10);
echo "$random_number";
?>

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Article by David Stanley. Visit his site http://www.htmlite.com. Reprinted with permission.

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