(PHP 4 >= 4.0.6, PHP 5, PHP 7)
imagecopymergegray — Copy and merge part of an image with gray scale
imagecopymergegray ( resource $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 ) : bool
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 resource.
src_im
Source image 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, except for ignoring alpha components, 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); ?>
© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.imagecopymergegray.php