Question

我在我的网站上构建了一个图像裁剪系统，通过用户上传获取图像，允许用户裁剪，然后通过PHP GD裁剪并将其上传到服务器。

出于某种原因，当我有一个非常大的图像，例如4000 x 6000（这是将要上传的大部分图像）时，我收到了PHP服务器错误。

查看我的日志后，我看到了这个错误，

PHP Fatal error:  Allowed memory size of 134217728 bytes exhausted (tried to allocate 37105903 bytes) in Unknown on line 0

注意：我已尝试ini_set('memory_limit', '-1');

以下是从HTML表单中检索基本64位编码图像的代码。

$imagebased64 = $_POST['imagebase64']; // base 64 image
$center_id = $_POST['center_id']; // user id
$filename = $this->helper_model->resize_profile_image($imagebased64, $center_id);    // resize the image and get the file name
$insert['image'] = $filename;   // insert into database

这是调整大小的图像功能：

/**
     * Returns an edit button - used to edit ticket row data
     *
     *
     * @param   base64    $data                         image to be cropped
     * @param   int       $center_id                    hashed center_id to be decrypted
     * @return  string                                  the file name of the image
     */
    public function resize_profile_image($data, $center_id) {
        ini_set('memory_limit', '-1');
        $center_id = $this->helper_model->convert_hash_to_center_id($center_id);

        // old dimensions
        $org_w = getimagesize($data)[0];
        $org_h = getimagesize($data)[1];

        // new dimensions
        $targ_w = 542;
        $targ_h = 671;

        $data = substr($data, 22);
        $data = base64_decode($data);
        $data = imagecreatefromstring($data);

        $image_p = imagecreatetruecolor($targ_w, $targ_h);
        imagecopyresampled($image_p, $data, 0, 0, 0, 0, $targ_w, $targ_h, $org_w, $org_h);

        // Buffering
        ob_start();
        imagepng($image_p);
        $data = ob_get_contents();
        ob_end_clean();

        //Store & Display
        $context = stream_context_create([
           'gs' =>[
                'acl'=> 'public-read', 
                'Content-Type' => 'image/jpeg', 
                'enable_cache' => true, 
                'enable_optimistic_cache' => true,
                'read_cache_expiry_seconds' => 300,
            ]
        ]);

        $name = $this->user_model->get_full_name($center_id);
        $filename = $name.'.jpg';
        file_put_contents(APPPATH.'../assets/developed/profile_images/'.$filename, $data, false, $context);

        return $filename;
    }

PHP GD图像裁剪允许的内存大小耗尽

0 个答案: