Open In App

PHP imagecopymergegray() Function

Improve
Improve
Like Article
Like
Save
Share
Report

The imagecopymergegray() function is an inbuilt function in PHP that is used to copy and merge the part of an image with a grayscale. This function copies the part of the source image into the destination image. This function returns true on success or false on failure. 

Syntax:

bool imagecopymergegray ( $dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, 
$src_w, $src_h, $pct )

parameters: This function accepts nine parameters as mentioned above and described below:

  • $dst_image: This parameter is used to set the destination image link resource.
  • $src_image: This parameter is used to set the source image link resource.
  • $dst_x: This parameter is used to set the x-coordinate of the destination point.
  • $dst_y: This parameter is used to set the y-coordinate of the destination point.
  • $src_x: This parameter is used to set the x-coordinate of the source point.
  • $src_y: This parameter is used to set the x-coordinate of the source point.
  • $src_w: This parameter is used to set source width.
  • $src_h: This parameter is used to set source height.
  • $pct: This parameter is used to change the grayscale according to $pct. The range of $pct is 0 to 100 where 0 is fully grayscale and 100 is unchanged. If $pct = 0, then no action is taken, and when $pct = 100 then this function behaves similarly to imagecopy() function for palette images, except ignoring the alpha components. It implements alpha transparency for true color images.

Return Value: This function returns true on success or false on failure. The below programs illustrate the imagecopymergegray() function in PHP.

Program 1: 

php




<?php
 
// Create image instances
$dest = imagecreatefromgif(
 
$src = imagecreatefromgif(
  
// Copy and merge the image
imagecopymergegray($dest, $src, 10, 10, 0, 0, 700, 200, 75);
  
// Output and free from memory
header('Content-Type: image/gif');
imagegif($dest);
  
imagedestroy($dest);
imagedestroy($src);
?>


Output: 

image

 Program 2: 

php




<?php
// Create image instances
$dest = imagecreatefrompng(
$src = imagecreatefrompng(
  
// Copy and merge
imagecopymergegray($dest, $src, 10, 10, 0, 0, 700, 200, 75);
  
// Output and free from memory
header('Content-Type: image/png');
imagegif($dest);
  
imagedestroy($dest);
imagedestroy($src);
?>


Output: 

image

Related Articles:

Reference: http://php.net/manual/en/function.imagecopymergegray.php



Last Updated : 11 May, 2023
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads