在wordpress中合并PHP GD库中的两个图像时，图像不显示

Question

我让这段代码工作，但几周后代码不起作用，我确实试图看看错误来自哪里，但我不知道。 我确实使用 GD 库创建了图像，并且它已成功创建，但是当我想将其与另一张图片合并时，它只显示黑屏。请了解如何解决问题的任何想法.这是我的代码： 请注意，图像创建并保存成功，因此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

这段代码对我有用。

$pro_directory_path = get_attached_file( get_post_thumbnail_id($_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