Difference between revisions of "PHP:Programming Tutorial"

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(Drawing the French tricolour with PHP)
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An introduction to computer programming using Java. Comprising
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{{topTenTips}}
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An introduction to computer programming using PHP. Comprising
 
*[[php:Tutorials| Tutorials]] which present problems and their solutions.
 
*[[php:Tutorials| Tutorials]] which present problems and their solutions.
 
*[[php:Guides| How to...]] guides to completing common tasks.
 
*[[php:Guides| How to...]] guides to completing common tasks.
 
*[[php:Assessments| Assessments]] graded problems with solutions.
 
*[[php:Assessments| Assessments]] graded problems with solutions.
==Drawing the French tricolour with PHP==  
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==Drawing the French tricolour with PHP==
You can create images using Java. 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 Java you can use [[methods]] such as  <code>[[setColor]]</code> and <code>[[fillRect]]</code> to create simple images.           
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You can create images using the [http://uk3.php.net/gd PHP GD library]. The first tutorial [[{{NAMESPACE}}:Flags 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  <code>[[imagecolorexact]]</code> and <code>[[imagefilledrectangle]]</code> to create simple images.           
 
<question height="100" width="150" imgOut="flag.png" className="Raster" title="France" lang='php'>  
 
<question height="100" width="150" imgOut="flag.png" className="Raster" title="France" lang='php'>  
 
[[Image:Flag_guide_france.png|border|right]]
 
[[Image:Flag_guide_france.png|border|right]]
Notice that the blue rectangle is at (0,0), it is 50 wide and 100 deep so the commands to draw the blue rectangle are:   
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Notice that the white rectangle has top left corner at (50,0), the bottom right corner is at (100,100)
  g.setColor(Color.blue);
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  $white = imagecolorexact($g,255,255,255);
  g.fillRect(0,0,50,100);
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  imagefilledrectangle($g,50,0,100,100,$white);
<shell lang="java" className="Flag" import="shells.xml#rasterphp"/>
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<shell className="Flag" import="shells.xml#rasterphp"/>
 
<prog>$blue = imagecolorexact($g,0,0,255);
 
<prog>$blue = imagecolorexact($g,0,0,255);
 
imagefilledrectangle($g,0,0,50,100,$blue);
 
imagefilledrectangle($g,0,0,50,100,$blue);
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imagefilledrectangle($g,100,0,150,100,$red);
 
imagefilledrectangle($g,100,0,150,100,$red);
 
</prog>
 
</prog>
<answer>$blue = imagecolorexact($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);
 
</answer>
 
 
</question>
 
</question>
  

Revision as of 18:43, 10 December 2012

An introduction to computer programming using PHP. Comprising

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.

Flag guide france.png

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);


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