PHP | imagecopymerge() Function

The imagecopymerge() function is an inbuilt function in PHP that is used to copy and merge the image into a single image. This function returns True on success or False on failure. 

Syntax:

bool imagecopymerge ( $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 y-coordinate of the source point.
• $src_w: This parameter is used to set the source width.
• $src_h: This parameter is used to set the source height.
• $pct: The two images will be merged with the help of $pct variables. The range of PCT is 0 to 100. If $pct = 0, then no action is taken, and when $pct = 100, then this function behaves similarly to the 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 imagecopymerge() function in PHP.

Program 1: Input Source Image: 

 Input Destination Image: 

<?php
// Create image instances
$dest = imagecreatefromgif(
'https://media.geeksforgeeks.org/wp-content/uploads/animateImages.gif');
$src = imagecreatefromgif(
'https://media.geeksforgeeks.org/wp-content/uploads/slider.gif');

// Copy and merge
imagecopymerge($dest, $src, 10, 10, 0, 0, 500, 200, 75);

// Output and free from memory
header('Content-Type: image/gif');
imagegif($dest);

imagedestroy($dest);
imagedestroy($src);
?>

Output: 

 Program 2: Input Source Image: 

 Input Destination Image: 

<?php
// Create image instances
$dest = imagecreatefrompng(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-9.png');
$src = imagecreatefrompng(
'https://media.geeksforgeeks.org/wp-content/uploads/col1.png');

// Copy and merge
imagecopymerge($dest, $src, 10, 10, 0, 0, 500, 200, 75);

// Output and free from memory
header('Content-Type: image/png');
imagegif($dest);

imagedestroy($dest);
imagedestroy($src);
?>

Output: 

Related Articles:

• PHP | imagecolorclosestalpha() Function
• PHP | imagecolorallocatealpha() Function
• PHP | imagecolorallocate() Function

Reference: https://www.php.net/manual/en/function.imagecopymerge.php