cece Sat Aug 16 15:29:17 2003 EDT
Modified files:
/phpdoc/en/reference/image/functions imagecolorallocatealpha.xml
Log:
added example (incorporated from user notes)
Index: phpdoc/en/reference/image/functions/imagecolorallocatealpha.xml
diff -u phpdoc/en/reference/image/functions/imagecolorallocatealpha.xml:1.2
phpdoc/en/reference/image/functions/imagecolorallocatealpha.xml:1.3
--- phpdoc/en/reference/image/functions/imagecolorallocatealpha.xml:1.2 Fri Jun 20
10:37:21 2003
+++ phpdoc/en/reference/image/functions/imagecolorallocatealpha.xml Sat Aug 16
15:29:17 2003
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
<refentry id="function.imagecolorallocatealpha">
<refnamediv>
<refname>imagecolorallocatealpha</refname>
@@ -26,6 +26,49 @@
<para>
Returns &false; if the allocation failed.
</para>
+ <para>
+ <example>
+ <title>Example of using <function>imagecolorallocatealpha</function></title>
+ <programlisting role="php">
+<![CDATA[
+<?php
+$size = 300;
+$Image=imagecreatetruecolor($size, $size);
+// something to get a white background
+$back = imagecolorallocate( $Image, 255, 255, 255 );
+$border = imagecolorallocate( $Image, 0, 0, 0);
+imagefilledrectangle ( $Image, 0, 0, $size-1, $size-1, $back);
+imagerectangle ( $Image, 0, 0, $size-1, $size-1, $border);
+
+$yellowX = 100;
+$yellowY = 75;
+$redX = 120;
+$redY = 165;
+$blueX = 187;
+$blueY = 125;
+$radius = 150;
+
+// allocate colors with alpha values
+$yellow = imagecolorallocateAlpha ( $Image, 255, 255, 0,75);
+$red = ImageColorAllocateAlpha( $Image, 255, 0, 0, 75 );
+$blue = ImageColorAllocateAlpha ( $Image, 0, 0, 255,75 );
+
+// drawing 3 overlapped circle
+ImageFilledEllipse($Image, $yellowX, $yellowY,$radius,$radius,$yellow);
+ImageFilledEllipse($Image, $redX, $redY,$radius,$radius,$red);
+ImageFilledEllipse($Image, $blueX, $blueY,$radius,$radius,$blue);
+
+// don't forget to output correct header!
+header('Content-Type: image/png');
+
+// output the result
+ImagePNG($Image);
+ImageDestroy($Image);
+?>
+]]>
+ </programlisting>
+ </example>
+ <para>
<para>
See also <function>imagecolorallocate</function> and
<function>imagecolordeallocate</function>.
--
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