我如何将 PHP Image Workshop 库与使用 php 的上传功能结合使用？

如何解决我如何将 PHP Image Workshop 库与使用 php 的上传功能结合使用？

我正在编写 PHP 脚本，我想在使用 PHP 上传图像的同时使用 PHP Image Workshop 库添加文本水印？

我有 PHP Image Workshop 库示例代码，但我不知道如何在上传图像时安装和使用文本水印库？

https://phpimageworkshop.com/tutorial/1/adding-watermark.html https://phpimageworkshop.com/installation.html

Fatal error: Class 'PHPImageWorkshop\Exception\ImageWorkshopBaseException' not found

这里是我上传图片的代码

$data = explode(".",$_FILES["upload_file"]["name"]);
$extension = $data[1];
$new_file_name = rand() . '.' . $extension;
$path = $_POST["hidden_folder_name"] . '/' . $new_file_name;
foreach($_FILES['upload_file']['name'] as $key=>$val){
    $file_path = $path.$_FILES['upload_file']['name'][$key];
    $filename = $_FILES['upload_file']['name'][$key];
    if(is_uploaded_file($_FILES['upload_file']['tmp_name'][$key])) {
        if(move_uploaded_file($_FILES['upload_file']['tmp_name'][$key],$file_path)){    
               
            $upload_images[] = $file_path;
            //$insert_sql = "INSERT INTO images(id,file_name,upload_time)
                    //VALUES('','".$filename."','".time()."')";
           // mysqli_query($conn,$insert_sql) or die("database error: ". mysqli_error($conn));
        }
    }
}

PHP Image Workshop 库示例代码

// If no autoloader,uncomment these lines:
require_once(__DIR__.'/Core/ImageWorkshopLayer.php');
require_once(__DIR__.'/Exception/ImageWorkshopException.php');
require_once('path/to/lib/PHPImageWorkshop/ImageWorkshop.php'); // Be sure of the path to the class

// We want to add a text on the diagonal of the norway picture,// We create a function to calculate the angle with pythagore & thales theorems
// this is not an obligation,you can choose another rotation angle...
function calculAngleBtwHypoAndLeftSide($bottomSideWidth,$leftSideWidth)
{
    $hypothenuse = sqrt(pow($bottomSideWidth,2) + pow($leftSideWidth,2));
    $bottomRightAngle = acos($bottomSideWidth / $hypothenuse) + 180 / pi();
     
    return -round(90 - $bottomRightAngle);
}
 
// Init' layers
$norwayLayer = ImageWorkshop::initFromPath('/path/to/images/norway.jpg');
$textLayer = ImageWorkshop::initTextLayer('© PHP Image Workshop','/path/to/fonts/arial.ttf',22,'ffffff',calculAngleBtwHypoAndLeftSide($norwayLayer->getWidth(),$norwayLayer->getHeight()));
 
// Some funky opacity
$textLayer->opacity(60);
 
// We add the $textLayer on the norway layer,in its middle
$norwayLayer->addLayer(1,$textLayer,'MM');
 
$image = $norwayLayer->getResult();

我需要在图片上添加文字水印

解决方法

您可以使用https://www.php.net/manual/en/function.imagecopy.php

你有没有尝试过这样的事情？

if (endsWith($filename,".jpeg")) {
    $im = imagecreatefromjpeg($filename);
} else if (endsWith($filename,".png")) {
    $im = imagecreatefrompng($filename);
}


imagecopy($im,$src_im,imagesx($src_im),imagesy($src_im));

您可以使用坐标来决定放置水印的位置。