Question

我正在使用OpenCart 1.5.6并编写了各种代码来检查图像的DPI并调整图像大小以便让用户知道他们是否拥有正确的文件。

调整图片大小：http://zing-cards.com/imagetest2.php（orig为640x480）

检查DPI：http://zing-cards.com/imagedpi1.php

正如您所见，它们可以在我的服务器上运行。

调整代码大小：

<?php
$photo="/home/tcsdesig/public_html/zing/flower.jpg";
$cmd = "/usr/bin/convert $photo -thumbnail 300x182 JPG:-"; //Convert image to smaller size for preview

header("Content-type: image/jpeg");
passthru($cmd, $retval);

?>

检查DPI

<?php

header("Content-type: text/html");

    $photoPath1 = "flower1.jpg";

    ...

    $dpiCommand = "/usr/bin/identify";
    if (!is_executable($dpiCommand)) die("Sorry, can't execute $dpiCommand!");
    $output = shell_exec("$dpiCommand -format '%x' $photoPath1");
    $dpi = explode(' ',trim($output));  //breaks up the result to get the number out (72 PixelsPerInch = 72)
    $dpiInt = (int)$dpi[0];  //changes the number to an integer (72 PixelsPerInch = 72)
    if ($dpiInt < 300) { //check if PPI is less than 300.
        echo "You should increase your PPI (DPI) for best printing quality. <br/><br/> Your current PPI is " . $output . "<br/>";
    } else { 
        echo "Congratulations! You're image is optimized for best printing quality.";   
    }

?>

对于调整大小，我希望OC上传原件，然后调整大小，上传调整大小的副本，然后显示该副本。我开始只是试图显示一个调整大小的副本。在我的控制器中=＆gt; product.php我将代码更改为：

if (!$json && is_uploaded_file($this->request->files['file']['tmp_name']) && file_exists($this->request->files['file']['tmp_name'])) {
            $file = basename($filename) . '.' . md5(mt_rand());

            // Hide the uploaded file name so people can not link to it directly.

            $json['file'] = $this->encryption->encrypt($file);



            move_uploaded_file($this->request->files['file']['tmp_name'], DIR_DOWNLOAD . $file);

            /* RESIZE IMAGE */
            $resizeCommand = "/usr/bin/convert";
            if (!is_executable($resizeCommand)) die("Sorry, can't execute $resizeCommand!");
            $resizeOutput = shell_exec("$resizeCommand basename($filename) -thumbnail 300x182 JPG:-");
            /* END RESIZE IMAGE */

            $json['thumb'] = $resizeOutput; //this gets displayed on the product.tpl page in a div set aside for the image.

            $json['success'] = 'The file "' . basename($filename) . '" has been uploaded.';
        }

结果返回null并且我没有收到错误消息以查看resizeCommand是否可执行。

有关此代码的详细信息，您可以查看我的相关帖子：Opencart - Customer uploads different files to one product with different responses from the site

我是否在正确的轨道上？这是我应该添加此代码还是应该在product.php中？

这可能是我在这里提到的php.ini或索引文件：https://stackoverflow.com/questions/21324895/image-magick-php-extension-is-installed-but-showing-error-class-imagick-not-foun？

任何建议都表示赞赏。

Answer 1

如果您尝试以opencart方式调整图片大小，则可以在控制器文件中使用以下代码：

$this->load->model('tool/image'); 

if ($this->data['profile_pic']) {
$this->data['image'] = $this->model_tool_image->resize($this->data['profile_pic'], 320, 240); //320 width, 240 height
} else {
$this->data['image'] = '';
}

其中$this->data['profile_pic'] - 包含相对于image文件夹的路径。

度过美好的一天！

Opencart - 上传时检查图像是否打印

1 个答案: