(PHP 4 >= 4.0.6, PHP 5)
imagecopymergegray — Copy and merge part of an image with gray scale
$dst_im
, resource $src_im
, int $dst_x
, int $dst_y
, int $src_x
, int $src_y
, int $src_w
, int $src_h
, int $pct
)
imagecopymergegray() copy a part of src_im
onto
dst_im
starting at the x,y coordinates
src_x
, src_y
with
a width of src_w
and a height of
src_h
. The portion defined will be copied
onto the x,y coordinates, dst_x
and
dst_y
.
This function is identical to imagecopymerge() except that when merging it preserves the hue of the source by converting the destination pixels to gray scale before the copy operation.
dst_im
Destination image link resource.
src_im
Source image link resource.
dst_x
x-coordinate of destination point.
dst_y
y-coordinate of destination point.
src_x
x-coordinate of source point.
src_y
y-coordinate of source point.
src_w
Source width.
src_h
Source height.
pct
The src_im
will be changed to grayscale according
to pct
where 0 is fully grayscale and 100 is
unchanged. When pct
= 100 this function behaves
identically to imagecopy() for pallete images, while
it implements alpha transparency for true colour images.
Returns TRUE
on success or FALSE
on failure.
Example #1 imagecopymergegray() usage
<?php
// Create image instances
$dest = imagecreatefromgif('php.gif');
$src = imagecreatefromgif('php.gif');
// Copy and merge - Gray = 20%
imagecopymergegray($dest, $src, 10, 10, 0, 0, 100, 47, 20);
// Output and free from memory
header('Content-Type: image/gif');
imagegif($dest);
imagedestroy($dest);
imagedestroy($src);
?>