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PHP to perl-Help !

Posted on 2001-06-13
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Last Modified: 2008-03-06
Hi

I found the following programs in PHP and I want to understand them to convert them to perl. Does any one know how to convert them please. Thanks
ImageCreate ??
ImageColorAllocate ??
ImageFilledRectangle ??
etc ??



/* create GIF file */

$im - ImageCreate (420,420);
$white = ImageColorAllocate ($im,255,255,255);
$black = ImageColorAllocate ($im,0,0,0);
$red = ImageColorAllocate ($im,255,10,10);
$green = ImageColorAllocate ($im,10,255,10);
$blue = ImageColorAllocate ($im,10,10,255);
$yellow = ImageColorAllocate ($im,255,255,0);
$y1 = ImageColorAllocate ($im,255,255,0);
$y2 = ImageColorAllocate ($im,255,220,0);
$y3 = ImageColorAllocate ($im,255,150,0);
$y4 = ImageColorAllocate ($im,255,20,0);

/* draw a legend */

ImageString ($im,5,10,20,"X county, state", $black);
ImageFilledRectangle ($im,10,280,20,290,$y1)
ImageFilledRectangle ($im,110,280,120,290,$y2)
ImageFilledRectangle ($im,210,280,220,290,$y3)
ImageFilledRectangle ($im,310,280,320,290,$y4)
ImageFilledRectangle ($im,2,10,300,less than 5,000",$black)
etc...
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Question by:nawaf
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3 Comments
 
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Expert Comment

by:ykf2000
ID: 6189113
I think you'll have to have a graphics library in Perl to do this.
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rycamor earned 300 total points
ID: 6189267
The code above is part of an extension to PHP to interface with the GD graphics library ( www.boutell.com/gd ). This is not part of the core language, so there will not be a direct mapping to similar Perl functions.

Perl has a library for handling GD, though, called GD.pm, which you can see at http://search.cpan.org/search?dist=GD . Be aware that you also have to install GD itself on your system.


It should be pretty easy to identify which functions do the same as the above PHP functions you quote, because they derive from the GD API.

I will mention also, that with PHP or Perl, the latest version of the GD image handler will NOT produce gif images, only PNG, Jpeg and others. This is because GD itself now doesn't handle gif output, due to copyright issues with Unisys, the patent holder for LZW compression. If you want to create a gif image, you need version 1.3 of GD and an older version of GD.pm.
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