About PHP / MySQL: How to Generate a Random Number with PHP

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PHP / MySQL PHP / MySQL PHP Basics MySQL Basics Advanced Skills From Angela Bradley, your Guide to PHP / MySQL Hello PHP Programmers! In this newsletter we take a look at how you can use random numbers in your PHP programs. We also look at the difference between cookies and sessions. Happy Holidays everyone! Have a great week! Random Numbers There are lots of different reason you may want to generate a random number. PHP can generate a random number over a very large range, or pick randomly between only two or three choices. You can set these parameters when you generate the number. Search Related Topics:  php code examples  random number  The Difference Between Cookies and Sessions The main difference between cookies and sessions is that cookies are stored in the user's browser, and sessions are not. This difference determines what each is best used for. Search Related Topics:  php code examples  sessions  cookies Finding the HTTP_REFERER The page referrer is found by using the $HTTP_REFERER variable. This is a quick way of looking up where people are navigating to your pages from. Once you know this information you can also filter users based upon it. For example, you only let people who come from one of your referring pages to use your downloads section, etc. Search Related Topics:  php code examples  php basic functions  Related Searches MySQL Tutorial PHP and MySQL Best PHP Scripts PHP PHP Code Generator Featured Articles Troubleshooting Programing Glossary Reader Response Social Networking with PHP @ About.com Learn PHP Learn MySQL   More from About.com The Perfect Engagement Ring How to find a gorgeous ring with a style and price that suit your needs. Read more...> Hometown Holidays Discover the best holiday events near your hometown. Read more...> This newsletter is written by: Angela Bradley PHP / MySQL Guide Email Me | My Blog | My Forum   Sign up for more free newsletters on your favorite topics You are receiving this newsletter because you subscribed to the About.com PHP / MySQL newsletter. If you wish to change your email address or unsubscribe, please click here. About.com respects your privacy: Our Privacy Policy Contact Information: 249 West 17th Street New York, NY, 10011 © 2012 About.com   Must Reads Learn PHP Using PHP with MySQL Learn MySQL Create Email Forms PHP Login Script   Follow me on: Advertisement