我试图在图像上获得水印,但水印应该与上传的图像大小相同,任何人都可以帮我这样做,我的意思是和高度。
请帮我这样做,当图片上传完成后,我希望它打开包含已处理图片的页面,而不是点击此处查看图片的消息。
<?php
define('WATERMARK_OVERLAY_IMAGE', 'watermark.png');
define('WATERMARK_OVERLAY_OPACITY', 50);
define('WATERMARK_OUTPUT_QUALITY', 90);
function create_watermark($source_file_path, $output_file_path)
{
list($source_width, $source_height, $source_type) = getimagesize($source_file_path);
if ($source_type === NULL) {
return false;
}
switch ($source_type) {
case IMAGETYPE_GIF:
$source_gd_image = imagecreatefromgif($source_file_path);
break;
case IMAGETYPE_JPEG:
$source_gd_image = imagecreatefromjpeg($source_file_path);
break;
case IMAGETYPE_PNG:
$source_gd_image = imagecreatefrompng($source_file_path);
break;
default:
return false;
}
$overlay_gd_image = imagecreatefrompng(WATERMARK_OVERLAY_IMAGE);
$overlay_width = imagesx($overlay_gd_image);
$overlay_height = imagesy($overlay_gd_image);
imagecopymerge(
$source_gd_image,
$overlay_gd_image,
$source_width - $overlay_width,
$source_height - $overlay_height,
0,
0,
$overlay_width,
$overlay_height,
WATERMARK_OVERLAY_OPACITY
);
imagejpeg($source_gd_image, $output_file_path, WATERMARK_OUTPUT_QUALITY);
imagedestroy($source_gd_image);
imagedestroy($overlay_gd_image);
}
/*
* Uploaded file processing function
*/
define('UPLOADED_IMAGE_DESTINATION', 'originals/');
define('PROCESSED_IMAGE_DESTINATION', 'images/');
function process_image_upload($Field)
{
$temp_file_path = $_FILES[$Field]['tmp_name'];
$temp_file_name = $_FILES[$Field]['name'];
list(, , $temp_type) = getimagesize($temp_file_path);
if ($temp_type === NULL) {
return false;
}
switch ($temp_type) {
case IMAGETYPE_GIF:
break;
case IMAGETYPE_JPEG:
break;
case IMAGETYPE_PNG:
break;
default:
return false;
}
$uploaded_file_path = UPLOADED_IMAGE_DESTINATION . $temp_file_name;
$processed_file_path = PROCESSED_IMAGE_DESTINATION . preg_replace('/\\.[^\\.]+$/', '.jpg', $temp_file_name);
move_uploaded_file($temp_file_path, $uploaded_file_path);
$result = create_watermark($uploaded_file_path, $processed_file_path);
if ($result === false) {
return false;
} else {
return array($uploaded_file_path, $processed_file_path);
}
}
/*
* Here is how to call the function(s)
*/
$result = process_image_upload('File1');
if ($result === false) {
echo '<br>er is een fout opgetreden.';
} else {
echo '<br>Je foto is klaar open hem door hier te klikken! <a href="' . $result[1] . '" target="_blank">' . $result[1] . '</a>';
}
?>
所有帮助将不胜感激。
答案 0 :(得分:0)
您正在寻找PHP的imagecopyresampled()而不是imagecopymerge(): http://php.net/manual/de/function.imagecopyresampled.php