PHP:Flags with Polygons Tutorial

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A polygon is a closed shape made up of straight lines (like a triangle or a square). See PHP:Polygons for details of how to do this.

Napier

The Napier flag is a red triangle on a white square. It suggests the letter N.
Flagnapier.png
We create a polygon in order to fill it. The http://uk.php.net/manual/en/function.imagepolygon.php ImagePolygon is part of the standard PHP4 package. We create a polygon points array, then call the ImagePolygon method.


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Bahamas

To complete the flag of the Bahamas you must add the black triangle which represents the unity and vigour of the people.

Flagbahamas.png


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Jamaica

We need to draw four triangles in order to draw the flag of Jamaica. If we get it right we will leave a yellow cross.

Flagjamaica.png


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Seychelles

The Seychelles has a cheerful flag; four triangles and a quadrilateral.

Flagseychelles.png


We tire of coming up with names for our polygons. In this example we reuse the same old polygon.



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