PHP - 从图像创建一个图像

Question

我有n图像，并且想用php代码创建一个图像。我使用imagecopymerge（），但无法做到。请举例子？

Answer 1

代码：

$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

感谢kruksmail，

我适应特定项目中的图像可能是未知的答案。所以我让你的答案与一系列图像一起工作。

它还可以指定您想要的行数或列数。我添加了一些意见，以帮助也。

$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>";