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Open Source Technologies
Notes does not mean that it exists on your server. If you have fonts that you created yourself,
you may want to upload those to your web directory and use those instead. At least, that
way, you have a guarantee that the font needed by your script exists.
• The path setting to the font file is tricky, and depends on the version of the GD library
your web server is using. One way around it is to specify the full path to the file on your
server.
12.4.2 Drawing to Your Image
Besides the line drawing function used above, PHP has other functions that you can use. To
whet your appetite, functions include those that allow you to draw ellipses, arcs and polygons,
change the style of your lines (to say dashed lines), and so on.
However, unless you have special reasons why you might want to dynamically draw complex
pictures onto an image, you should consider creating your base image using a normal picture
editor, load that image using a function like imagecreatefrompng(), and then only modifying
small details with your script. Generating everything from scratch is unnecessary for most
purposes, and can drain your web server resources.
12.5 Image Creation from User Input
You understood that having created an image with php it was possible to load it using the img
tag and it certainly works where the comment is hard coded.
HTML Code:
<html>
<head>
<title>myscripthtml</title>
<script type=”text/javascript”>
function getComments()
{
return true;
}
</script>
</head>
<body>
Provide comments
<form name=”cmt” action=”myscript2.php” method=”GET” onSubmit=”return
getComments()”/>
<input type=”text” name=”cmment”/>
<input type=”submit” value=”submit comments”/>
</form>
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