PHP:Programming Tutorial

PHP:Top Ten Tips

Hello World

Convert to Number

Read Text File

Sum an Array

Count 0 to 9

Hash Table

Regular Expression

Read Database

Read XML

Define a Class

An introduction to computer programming using PHP. Comprising

• Tutorials which present problems and their solutions.
• How to... guides to completing common tasks.
• Assessments graded problems with solutions.

Drawing the French tricolour with PHP

You can create images using the PHP GD library. The first tutorial Flags looks at drawing flags of the world, from simple flags such as Libya to more complicated flags such as the Stars and Stripes of the USA. In GD you can use functions such as imagecolorexact and imagefilledrectangle to create simple images.

Notice that the white rectangle has top left corner at (50,0), the bottom right corner is at (100,100)

$white = imagecolorexact($g,255,255,255);
imagefilledrectangle($g,50,0,100,100,$white);

.

$blue = imagecolorexact($g,0,0,255); imagefilledrectangle($g,0,0,50,100,$blue); $white = imagecolorexact($g,255,255,255); imagefilledrectangle($g,50,0,100,100,$white); $red = imagecolorexact($g,255,0,0); imagefilledrectangle($g,100,0,150,100,$red);

[Font] [Default] [Show] [Resize] [History] [Profile]

test text

 

 

 

 

Consult the User's Guide for information on changing material in progzoo.

You can mess about in the Playpen.