Most Referenced Functions
  » google_pagerank()
  » preg_replace()
  » imagecreatefrompng()
  » site_pageranks()
  » imagepng()
  » imagedestroy()
  » imagestring()
  » imagecolorallocate()
  » htmlentities()
  » preg_match()
  » fopen()
  » header()
  » getimagesize()
  » htmlspecialchars()
  » ob_start()
  » strstr()
  » session_start()
  » preg_match_all()
  » ob_flush()
  » strpos()
  » flush()
  » setcookie()
  » str_replace()
  » array2vars()
  » nl2br()
  » preg_split()
  » ereg()
  » ereg_replace()
  » urlencode()
  » readgzfile()

Check out my live SEO case study, where I am building and growing a 300,000+ page site on autopilot

Become a sponsor for $15/month. Link is sitewide - PR5 homepage, 20+ PR4 pages, 90+ PR3 pages. Email dave[AT]icemelon[D0T]c0m.

PHP Functions

Function: rand

(PHP 3, PHP 4, PHP 5)

rand -- Generate a random integer

Description

int rand ( [int min, int max] )

If called without the optional min , max arguments rand() returns a pseudo-random integer between 0 and RAND_MAX . If you want a random number between 5 and 15 (inclusive), for example, use rand (5, 15) .

Example 1. rand() example 

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

echo rand(5, 15);
?>

The above example will output something similar to:

7771
22264
11

Note: On some platforms (such as Windows) RAND_MAX is only 32768. If you require a range larger than 32768, specifying min and max will allow you to create a range larger than RAND_MAX, or consider using mt_rand() instead.

Note: As of PHP 4.2.0, there is no need to seed the random number generator with srand() or mt_srand() as this is now done automatically.

Note: In versions before 3.0.7 the meaning of max was range . To get the same results in these versions the short example should be rand (5, 11) to get a random number between 5 and 15.

Related Function(s)

  • mt_rand()
  • srand()
  • mt_srand()
  • getrandmax()
    • Icemelon -- PHP, CSS, Javascript Tutorials, & More!
      © 2005-2010 Icemelon.com   Email: dave[AT]icemelon[D0T]c0m