imagecopymergegray
(PHP 4 >= 4.0.6, PHP 5, PHP 7)
imagecopymergegray — Copy and merge part of an image with gray scale
Description
$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.
Parameters
-
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 topct
where 0 is fully grayscale and 100 is unchanged. Whenpct
= 100 this function behaves identically to imagecopy() for pallete images, except for ignoring alpha components, while it implements alpha transparency for true colour images.
Examples
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);
?>
English translation
You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.
Thank you in advance.
Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-function.imagecopymergegray.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.