mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-15 16:38:54 +00:00
3dda08bb3d
into a number of smaller chapters, and chopping the "Language Reference"
part into a three parts ("Getting Started", "Language Reference", and
the badly-named "Features").
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@9855 c90b9560-bf6c-de11-be94-00142212c4b1
55 lines
1.6 KiB
Text
55 lines
1.6 KiB
Text
<chapter id="features.images">
|
|
<title>Creating GIF images</title>
|
|
|
|
<simpara>
|
|
PHP is not limited to creating just HTML output. It can also be
|
|
used to create GIF image files, or even more convenient GIF image
|
|
streams. You will need to compile PHP with the GD library of
|
|
image functions for this to work.
|
|
</simpara>
|
|
|
|
<para>
|
|
<example>
|
|
<title>GIF creation with PHP</title>
|
|
<programlisting role=php>
|
|
<?php
|
|
Header("Content-type: image/gif");
|
|
$string=implode($argv," ");
|
|
$im = imagecreatefromgif("images/button1.gif");
|
|
$orange = ImageColorAllocate($im, 220, 210, 60);
|
|
$px = (imagesx($im)-7.5*strlen($string))/2;
|
|
ImageString($im,3,$px,9,$string,$orange);
|
|
ImageGif($im);
|
|
ImageDestroy($im);
|
|
?>
|
|
</programlisting>
|
|
</example>
|
|
|
|
This example would be called from a page with a tag like: <img
|
|
src="button.php3?text"> The above button.php3 script
|
|
then takes this "text" string an overlays it on top of a
|
|
base image which in this case is "images/button1.gif"
|
|
and outputs the resulting image. This is a very convenient way to
|
|
avoid having to draw new button images every time you want to
|
|
change the text of a button. With this method they are
|
|
dynamically generated.
|
|
</para>
|
|
|
|
</chapter>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
-->
|