Browse Topic
Geometry and PHP
The Pi () Function
The PI () function is used in many mathematical calculations and is approximately equal to 3.14159265358979323846.
More Geometry
PHP and the GD Library
The GD Library is usually bundled with PHP, and is used to manipulate graphics with code. You can start by creating graphics that simply consist of text. Later, you can move on to actually drawing the images yourself with the code.
Doing More With the GD Library
Angela's PHP / MySQL Blog
Redirection Script
Friday October 10, 2008
One of our most popular scripts is our PHP Redirection Script. This script is used to forward a user from an old webpage or one you don't want them visiting anymore to a different page. This is particularly useful if you change the name of a page and want visitors who have the old page bookmarked to be moved seamlessly to the new page.
PHP Asin () Function
Wednesday October 8, 2008
The Asin (x) function in PHP is used to find the arcsine of a number as a numeric value value between -PI/2 and PI/2 radians. X should be a number between -1 and 1. Here is an example:
<?php
echo(asin(-0.5));
?>
In our example, we would be given the result -0.5235987755983. More about Asin ().
Discuss
Recent Blog Posts
Community Forum
New posts to the Php forums:
Explore PHP / MySQL
Must Reads
More from About.com
Work Hard, Travel Easy
The best tips for business travelers.Dog Care
Get tips on training and caring for dogs of all ages.48 Hours in Vegas
Plan a hot weekend in Sin City.Hotel Advice
The must-stay hotels worldwide.
©2008 About.com, a part of The New York Times Company.
All rights reserved.