Combine 2-3 Transparent Png Images on Top of Each Other with PHP

Combine 2-3 transparent PNG images on top of each other with PHP

$image_1 = imagecreatefrompng('image_1.png');
$image_2 = imagecreatefrompng('image_2.png');
imagealphablending($image_1, true);
imagesavealpha($image_1, true);
imagecopy($image_1, $image_2, 0, 0, 0, 0, 100, 100);
imagepng($image_1, 'image_3.png');

merge Transparent PNG images with other PNG images - PHP

the solution was to use

imagecopy($dest, $src, ($offsetY + 250), $offset, 0, 0, imagesx($src),imagesy($src));

not

imagecopymerge($dest, $src, ($offsetY + 250), $offset, 0, 0, imagesx($src),imagesy($src), 99);

Merging two images with PHP

I got it working from one I made.

<?php
$dest = imagecreatefrompng('vinyl.png');
$src = imagecreatefromjpeg('cover2.jpg');

imagealphablending($dest, false);
imagesavealpha($dest, true);

imagecopymerge($dest, $src, 10, 9, 0, 0, 181, 180, 100); //have to play with these numbers for it to work for you, etc.

header('Content-Type: image/png');
imagepng($dest);

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

how do i create a transparent canvas, then add transparent pngs to it?

 $img = imagecreatetruecolor(...);
 imagealphablending($img,false);
 //rest of code.

Automatically align and resize 3 images into a small image with PHP?

The easiest way is just to always fit the face/hair/beard in the same area of the image. Then just crop that area out.

If you must, you can store extra data for each image specifying a rectangle in the image that must be visible in the small avatar. Then take the maximum extremities of these rectangles in all the images you compose, and crop+shrink that down to your small avatar size.

However, be aware that resizing PNG images by a few pixels (e.g. 83x83 -> 80x80) can substantially reduce the quality, particularly for images with lots of defined edges. This is because there are many pixels in the new image that are [nearly] evenly split between 4 pixels from the original image, and in images with sharp edges this leads to blurring.

So, shrinking an image to fit a portrait is not just difficult but also reduces quality. I'd cut off the beard instead!

Put PNG over a JPG in PHP

<?
$png = imagecreatefrompng('./mark.png');
$jpeg = imagecreatefromjpeg('./image.jpg');

list($width, $height) = getimagesize('./image.jpg');
list($newwidth, $newheight) = getimagesize('./mark.png');
$out = imagecreatetruecolor($newwidth, $newheight);
imagecopyresampled($out, $jpeg, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
imagecopyresampled($out, $png, 0, 0, 0, 0, $newwidth, $newheight, $newwidth, $newheight);
imagejpeg($out, 'out.jpg', 100);
?>

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