php png图片合并

<?php
// 加载两张PNG图片
$image1 = imagecreatefrompng('image1.png');
$image2 = imagecreatefrompng('image2.png');

// 获取图片尺寸
$width1 = imagesx($image1);
$height1 = imagesy($image1);
$width2 = imagesx($image2);
$height2 = imagesy($image2);

// 创建一个新的图像，大小为两张图片的宽度和高度之和
$newImage = imagecreatetruecolor($width1 + $width2, max($height1, $height2));

// 将第一张图片复制到新图像上
imagecopy($newImage, $image1, 0, 0, 0, 0, $width1, $height1);

// 将第二张图片复制到新图像上
imagecopy($newImage, $image2, $width1, 0, 0, 0, $width2, $height2);

// 输出合并后的图片
header('Content-Type: image/png');
imagepng($newImage);

// 释放内存
imagedestroy($image1);
imagedestroy($image2);
imagedestroy($newImage);
?>

$newImage = imagecreatetruecolor($width1 + $width2, max($height1, $height2));
$transparent = imagecolorallocatealpha($newImage, 0, 0, 0, 127);
imagefill($newImage, 0, 0, $transparent);
imagecolortransparent($newImage, $transparent);

imagecopyresampled($newImage, $image1, 0, 0, 0, 0, $width1, $height1, $width1, $height1);
imagecopyresampled($newImage, $image2, $width1, 0, 0, 0, $width2, $height2, $width2, $height2);