PHP | imagepalettecopy() function

The imagepalettecopy() function is an inbuilt function in PHP which is used to copy the palette from one image to another.

Syntax:

void imagepalettecopy( resource $destination, resource $source )

Parameters:This function accepts two parameters as mentioned above and described below:

• $destination: It specifies the destination image resource.
• $source: It specifies the source image resource.

Return Value: This function returns nothing.

Below given programs illustrate the imagepalettecopy() function in PHP:

Program 1:

<?php
// Create two palette images
$palette1 = imagecreate(700, 200);
$palette2 = imagecreate(700, 200);

// Create a green color
$green = imagecolorallocate($palette1, 0, 255, 0);

// Add green color as background to pallete 1
imagefilledrectangle($palette1, 0, 0, 99, 99, $green);

// Copy the palette from image 1 to image 2
imagepalettecopy($palette2, $palette1);

// Output image to the browser and see the color is green
header('Content-type: image/png');
imagepng($palette2);
?>

Output:

Program 2:

<?php
// Create two palette images
$palette1 = imagecreate(700, 200);
$palette2 = imagecreate(700, 200);

// Create a green color
$green = imagecolorallocate($palette1, 0, 255, 0);

// Add green color as background to pallete 1
imagefilledrectangle($palette1, 0, 0, 99, 99, $green);

// Copy the palette from image 1 to image 2
imagepalettecopy($palette2, $palette1);

// Get the number of colors in image
$color1 = imagecolorstotal($palette1);
$color2 = imagecolorstotal($palette2);

echo "Number of colors at image 1 is " . $color1 . "<br>";
echo "Number of colors at image 2 is " . $color2;
?>

Output:

Number of colors at image 1 is 1
Number of colors at image 2 is 1

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