From: jumo at gmx dot de
Operating system: debian
PHP version: 5.1.2
PHP Bug Type: GD related
Bug description: weird behaviour using imagecolorallocate very often
Description:
------------
I want to draw many squares on a PNG image, wich have changing color.
after some correct drawed there is only one color used.
Reproduce code:
---------------
<?php
$bigsize = 500;
$colours = array( 'FF0000' , '00FF00' );
header("Content-type: image/png");
$im = imagecreate( $bigsize * 2 , 50 );
for( $j = 0; $j < $bigsize ; $j++ ) {
$k = $j % count( $colours );
$r = hexdec( substr( $colours[ $k ] , 0 , 2 ) );
$g = hexdec( substr( $colours[ $k ] , 2 , 2 ) );
$b = hexdec( substr( $colours[ $k ] , 4 , 2 ) );
$fill = imagecolorallocate($im, $r , $g , $b );
imagefilledrectangle( $im , 2*$j , 0 , 2*$j+1 , 50 , $fill );
}
imagepng($im);
imagedestroy($im);
?>
Expected result:
----------------
a bar with red and green vertical stripes wich have changing colors.
Actual result:
--------------
the right half of the bar is green.
--
Edit bug report at http://bugs.php.net/?id=36218&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36218&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36218&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36218&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36218&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36218&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36218&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36218&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36218&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36218&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36218&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36218&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36218&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36218&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36218&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36218&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36218&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36218&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36218&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36218&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36218&r=mysqlcfg
