在 wordpress 中合并 PHP GD 库中的两个图像时，图像不显示

Question

我让这段代码可以工作，但几周后代码无法正常工作，我确实尝试查看错误来自哪里，但我不知道。 我确实使用 GD 库创建了图像并且它创建成功但是当我想将它与另一张图片合并时它只显示黑屏。请知道如何解决这个问题。这是我的代码： 请注意图片创建并保存成功，所以create_image()函数没有问题。

function create_image()
{
    $cer_id = get_the_ID();
    $cer_org_nummer = get_field('orgnummer_dqm');
    $cer_today = date('Y-m-d');
    $cer_org_name = get_field('foretags_namn_dqm');
    $cer_org_date = $cer_org_nummer . ' | ' . $cer_today;


    $im = @imagecreate(500, 450);
    $yellow = imagecolorallocate($im, 255, 255, 255);  // yellow
    imagecolortransparent($im, $yellow);

    $black = imagecolorallocate($im, 252, 195, 91);
    $string = "Digital Quality Managment";
    $font = FUNC_PLUGIN_D_DQM . '/font/Roboto-Regular.ttf';// black

    /*    imagestring($im, $font, 50, 300, $string, $black);*/
    /*    imagestring($im, $font, 3, 300, $cer_org_name, $black);*/
    /*    imagestring($im, $font, 0, 10, $cer_org_date, $black);*/
    imagettftext($im, 35, 0, 60, 270, $black, $font, 'CERTIFIED');

    imagettftext($im, 25, 0, 0, 320, $black, $font, $cer_org_date);

    imagepng($im, "wp-content/plugins/certificates/cer_images/image_$cer_id.png");
    imagedestroy($im);
}
      create_image();
    $image1 = "wp-content/plugins/certificates/cer_images/dqm_png_logo.png";
    $image2 = "wp-content/plugins/certificates/cer_images/image_$cer_id.png";

    list($width, $height) = getimagesize($image2);


    $image1 = imagecreatefromstring(file_get_contents($image1));

    $image2 = imagecreatefromstring(file_get_contents($image2));


    imagealphablending($image1, FALSE);
    imagesavealpha($image1, TRUE);
    imagecopymerge($image1, $image2, 110, 50, 0, 0, $width, $height, 100);


    header("Content-type: image/png");
    imagepng($image1);
    imagedestroy($image1);

Answer 1

请尝试下面的代码

此代码对我有用..

$pro_directory_path = get_attached_file( get_post_thumbnail_id($_REQUEST['apid']),'full' );

$mainmetadata = wp_get_attachment_metadata( get_post_thumbnail_id( $_REQUEST['apid'] ) );

$pro_img_name = $mainmetadata['file'];

$pro_img_name_extra = '1'.$mainmetadata['file'];

// $val_id is id of image(bigger image/background Image)
$directory_path = get_attached_file( $val_id,'full' );

$metadata = wp_get_attachment_metadata( $val_id );

$name = $metadata['file'];

$bgFile = $directory_path;

// We want our final image to be 76x76 size
//user $metadata to get ordiginal height width of image
// $value contain height width of wall mentioned by admin
$x = $metadata['width'];
$y = $metadata['height'];

$x_inch = $metadata['width']/96;
$y_inch = $metadata['height']/96;

$width_proption = $wall_w_inch/$x_inch;
$height_proption = $wall_h_inch/$y_inch;

$img_pos_x = ($x/2)-($resizedwidth/2);
$img_pos_y = ($y/2)-($resizedheight);

/* Code to generate custom wall images - STart */
$inn_width = ($innerimg_width / $width_proption) * 12 ;
$inn_height = ($innerimg_height / $height_proption) * 12 ;

$resizedFilename = get_template_directory().'/woocommerce/temp_images/cust_'.$pro_img_name;

$img_url_extra =  get_stylesheet_directory_uri().'/woocommerce/temp_images/cust_'.$pro_img_name;

//function to resize Artist product image in desired size's (Variation sizes).
$imgData = resize_image($pro_directory_path, $inn_width, $inn_height);
imagepng($imgData, $resizedFilename);

list($resizedwidth, $resizedheight) = getimagesize($resizedFilename);

/* Code to generate custom wall images - ENDS */

$imageFile = $resizedFilename;

// dimensions of the final image
$final_img = imagecreatetruecolor($x, $y);

// Create our image resources from the files
$image_1 = imagecreatefrompng($bgFile);
$image_2 = imagecreatefrompng($imageFile);

// Enable blend mode and save full alpha channel
imagealphablending($final_img, true);
imagesavealpha($final_img, true);

// Copy our image onto our $final_img
imagecopy($final_img, $image_1, 0, 0, 0, 0, $x, $y);
imagecopy($final_img, $image_2, $img_pos_x, $img_pos_y, 0, 0, $resizedwidth, $resizedheight);

ob_start();
$path =  __DIR__ .'/custom_wall_img/'.$name;
imagepng($final_img,$path);
$watermarkedImg = ob_get_contents(); // Capture the output
ob_end_clean(); // Clear the output buffer