PHP - Create one image from images - php

Question

i have n-images and want to create one with php code. I use imagecopymerge(), but can't make it. Some example please?

Answer 1

Code:
$numberOfImages = 3;
$x = 940;
$y = 420;
$background = imagecreatetruecolor($x, $y*3);
$firstUrl = '/images/upload/photoalbum/photo/1.jpg';
$secondUrl = '/images/upload/photoalbum/photo/2.jpg';
$thirdUrl = '/images/upload/photoalbum/photo/3.jpg';
$outputImage = $background;
$first = imagecreatefromjpeg($firstUrl);
$second = imagecreatefromjpeg($secondUrl);
$third = imagecreatefromjpeg($thirdUrl);
imagecopymerge($outputImage,$first,0,0,0,0, $x, $y,100);
imagecopymerge($outputImage,$second,0,$y,0,0, $x, $y,100);
imagecopymerge($outputImage,$third,0,$y*2,0,0, $x, $y,100);
imagejpeg($outputImage, APPLICATION_PATH .'/images/upload/photoalbum/photo/test.jpg');
imagedestroy($outputImage);

Answer 2

Thanks kruksmail,
I adapted your answer for a specific project in which the images could be unknown. So I made your answer work with an array of images.
It also gives the ability to specify how many rows or columns you want. I added some comments to help also.
$images = array('/images/upload/photoalbum/photo/1.jpg','/images/upload/photoalbum/photo/2.jpg','/images/upload/photoalbum/photo/3.jpg');
$number_of_images = count($images);
$priority = "columns"; // also "rows"
if($priority == "rows"){
$rows = 3;
$columns = $number_of_images/$rows;
$columns = (int) $columns; // typecast to int. and makes sure grid is even
}else if($priority == "columns"){
$columns = 3;
$rows = $number_of_images/$columns;
$rows = (int) $rows; // typecast to int. and makes sure grid is even
}
$width = 150; // image width
$height = 150; // image height
$background = imagecreatetruecolor(($width*$columns), ($height*$rows)); // setting canvas size
$output_image = $background;
// Creating image objects
$image_objects = array();
for($i = 0; $i < ($rows * $columns); $i++){
$image_objects[$i] = imagecreatefromjpeg($images[$i]);
}
// Merge Images
$step = 0;
for($x = 0; $x < $columns; $x++){
for($y = 0; $y < $rows; $y++){
imagecopymerge($output_image, $image_objects[$step], ($width * $x), ($height * $y), 0, 0, $width, $height, 100);
$step++; // steps through the $image_objects array
}
}
imagejpeg($output_image, 'test.jpg');
imagedestroy($output_image);
print "<div><img src='test.jpg' /></div>";