如何将多个图像和文本合并为一个图像?

How to merge multiple images and text into single image?

我在 div 中有多个 PNG 图像,这些图像是 PNG 并且根据自定义选项 he/she 已选择,作为单个图像呈现给用户。此外,添加文本也作为其他功能启用,这允许 div 将文本添加到这些图像上方。

现在我想生成一个包含多个图像和文本的图像,同时保持 font-family 和文本大小。

例如。界面上出现的图像,图像和文字相结合。 (它设法以 css 定位出现) 这是由下面的两张图片和文字组成的

这是我尝试拍摄的图像:create-image.php 文件

<?php
createimageinstantly();
function createimageinstantly($img1='',$img2='',$img3=''){
    $x=$y=1000;
    header('Content-Type: image/png');
    $targetFolder = '/gw/media/uploads/processed/';
    $targetPath = $_SERVER['DOCUMENT_ROOT'] . $targetFolder;

    $img1 = $targetPath.'img1.png';
    $img2 = $targetPath.'img2.png';
    $img3 = $targetPath.'img3.png';

    $outputImage = imagecreatetruecolor(1000, 1000);

    $first = imagecreatefrompng($img1);
    $second = imagecreatefrompng($img2);
    $third = imagecreatefrompng($img3);

    imagecopy($outputImage,$first,0,0,0,0, $x, $y);
    imagecopy($outputImage,$second,0,0,0,0, $x, $y);
    imagecopy($outputImage,$third,0,200,-200,0, $x, $y);

    imagepng($outputImage, $targetPath .round(microtime(true) * 1000).'.png');

    imagedestroy($outputImage);
 }
?>

但这给了我全黑的图像

此外,我需要在最终生成的图像上混合文字

已编辑 :

最新结果:

       <?php
            createimageinstantly();
            //$targetFolder = '/gw/media/uploads/processed/';
            //$targetPath = $_SERVER['DOCUMENT_ROOT'] . $targetFolder;
            //$img3 = $targetPath.'img3.png';
            //print_r(getimagesize('http://www.vapor-rage.com/wp-content/uploads/2014/05/sample.jpg'));
            function createimageinstantly($img1='',$img2='',$img3=''){
                $x=$y=600;
                header('Content-Type: image/png');
                $targetFolder = '/gw/media/uploads/processed/';
                $targetPath = $_SERVER['DOCUMENT_ROOT'] . $targetFolder;

                $img1 = $targetPath.'img1.png';
                $img2 = $targetPath.'img2.png';
                $img3 = $targetPath.'img3.png';

                $outputImage = imagecreatetruecolor(600, 600);

                // set background to white
                $white = imagecolorallocate($outputImage, 255, 255, 255);
                imagefill($outputImage, 0, 0, $white);

                $first = imagecreatefrompng($img1);
                $second = imagecreatefrompng($img2);
                $third = imagecreatefrompng($img3);

                //imagecopyresized ( resource $dst_image , resource $src_image , int $dst_x , int $dst_y , int $src_x , int $src_y , int $dst_w , int $dst_h , int $src_w , int $src_h )
                imagecopyresized($outputImage,$first,0,0,0,0, $x, $y,$x,$y);
                imagecopyresized($outputImage,$second,0,0,0,0, $x, $y,$x,$y);
                imagecopyresized($outputImage,$third,200,200,0,0, 100, 100, 204, 148);

                imagepng($outputImage, $targetPath .round(microtime(true)).'.png');

                imagedestroy($outputImage);
            }
        ?>

和输出图像

首先,jpeg图像没有alpha通道 - 这意味着图像中的每个像素都有一些颜色,没有有关其透明度的信息。可能很难为此创建解决方法,但您可以 google 它。如果可以 - 我建议你使用 PNG 格式,它包含透明度信息。

其次 - 尝试阅读 PHP docs for imagecopymerge. This comment 中的评论部分提供了一些您可以使用的有用信息:

Sina Salek: I've just checked PHP's issue tracker and a core developer says that this function was never meant to support alpha channel! and they refused to commit the provided patch!

然后评论者提供了一个我认为可行的示例。

我是这样实现的,

使用了这 3 张图片,img1.png,img2.png,img3.png

create-image.php文件

 <?php
        createimageinstantly();
        //$targetFolder = '/gw/media/uploads/processed/';
        //$targetPath = $_SERVER['DOCUMENT_ROOT'] . $targetFolder;
        //$img3 = $targetPath.'img3.png';
        //print_r(getimagesize('http://www.vapor-rage.com/wp-content/uploads/2014/05/sample.jpg'));
        function createimageinstantly($img1='',$img2='',$img3=''){
            $x=$y=600;
            header('Content-Type: image/png');
            $targetFolder = '/gw/media/uploads/processed/';
            $targetPath = $_SERVER['DOCUMENT_ROOT'] . $targetFolder;

            $img1 = $targetPath.'img1.png';
            $img2 = $targetPath.'img2.png';
            $img3 = $targetPath.'img3.png';

            $outputImage = imagecreatetruecolor(600, 600);

            // set background to white
            $white = imagecolorallocate($outputImage, 255, 255, 255);
            imagefill($outputImage, 0, 0, $white);

            $first = imagecreatefrompng($img1);
            $second = imagecreatefrompng($img2);
            $third = imagecreatefrompng($img3);

            //imagecopyresized ( resource $dst_image , resource $src_image , int $dst_x , int $dst_y , int $src_x , int $src_y , int $dst_w , int $dst_h , int $src_w , int $src_h )
            imagecopyresized($outputImage,$first,0,0,0,0, $x, $y,$x,$y);
            imagecopyresized($outputImage,$second,0,0,0,0, $x, $y,$x,$y);
            imagecopyresized($outputImage,$third,200,200,0,0, 100, 100, 204, 148);

            // Add the text
            //imagettftext ( resource $image , float $size , float $angle , int $x , int $y , int $color , string $fontfile , string $text )
            //$white = imagecolorallocate($im, 255, 255, 255);
            $text = 'School Name Here';
            $font = 'OldeEnglish.ttf';
            imagettftext($outputImage, 32, 0, 150, 150, $white, $font, $text);

            $filename =$targetPath .round(microtime(true)).'.png';
            imagepng($outputImage, $filename);

            imagedestroy($outputImage);
        }
    ?>

结果图像是

参考:imagecopyresized & imagettftext

感谢您通过 comments/answers 提出的建议。 我还详细地写了博客 http://sumankc.com/2016/01/30/merge-multiple-images-and-text-to-create-single-image-php-gd-library/ 美好的一天!!