CodeIgniter / PHP / GD2图像处理正在播放 [英] CodeIgniter/PHP/GD2 Image Manipulation is playing up

问题描述

我有一个网站需要用户上传的图片，并制作三个副本 - 完整副本打印（缩小到1500x1125），网络副本在线显示（尚未编码），最后

I have a website going that takes a user's uploaded image, and makes three copies - a 'full' copy to print with (downsized to 1500x1125), a 'web' copy to display online (not coded yet), and finally a thumbnail.

这里是代码 - _imageformat（）传递来自CI的上传类的参数（我已经确认是正确的）：

So here's the code - _imageformat() is passed the parameters (which I've confirmed to be correct) from CI's Upload Class:

function _imageformat($fullpath, $shortpath, $width, $height)

{
//我们现在格式化图片。

{ // We now format the image.

//首先，风景或肖像
if（$ width> = $ height）//它是风景（或正方形）
{
//现在创建完整的打印图像
$ fullimage = $ this - > _ resize（'l'，$ fullpath，$ shortpath，$ width，$ height）;
}
else //它的肖像
{
//现在创建完整的打印图像
$ fullimage = $ this - > _ resize（'p'，$ fullpath ，$ shortpath，$ width，$ height）;
}

// First, we check if it is landscape or portrait if ($width >= $height) // It's landscape (or square) { // Now create the full printing image $fullimage = $this->_resize('l', $fullpath, $shortpath, $width, $height); } else // It's portrait { // Now create the full printing image $fullimage = $this->_resize('p', $fullpath, $shortpath, $width, $height); }

}

function _resize（$ type，$ fullpath，$ shortpath，$ width ，$ height）
{
//设置默认的Image Manipulation配置选项
$ config ['image_library'] ='gd2';
$ config ['source_image'] = $ fullpath;
$ config ['maintain_ratio'] = TRUE;

function _resize($type, $fullpath, $shortpath, $width, $height) { // Set up the default Image Manipulation config options $config['image_library'] = 'gd2'; $config['source_image'] = $fullpath; $config['maintain_ratio'] = TRUE;

// Shave the '.jpg' from the end to append some nice suffixes we'll use
$newimage = substr($fullpath, 0, -4).'_full'.".jpg";

$config['new_image'] = $newimage;

if ($type == 'l') // If it's landscape
{
 $config['width'] = 1500;
 $config['height'] = 1125;
}
else if ($type == 'p') // If it's portrait
{
 $config['width'] = 1125;
 $config['height'] = 1500;   
}

// Load the image library with the specified parameters, and resize the image!  
$this->load->library('image_lib', $config); 
$this->image_lib->resize();

// Create a thumbnail from the full image
$config['source_image']  = $newimage;
$config['new_image']  = substr($fullpath, 0, -9)."_thumb".".jpg";
$config['maintain_ratio']  = TRUE;
$config['width']    = 150;
$config['height']   = 150;

$this->load->library('image_lib', $config); 

$this->image_lib->resize();

return $newimage;

}

发生：在我的上传文件夹中，有三个图片 - 原始上传的文件（我们称为image.jpg），调整大小的文件（名为image_full.jpg）和缩略图（名为image_thumb.jpg）

What SHOULD happen: In my uploads folder, there are three images - the original uploaded file (we'll call it image.jpg), the resized file (named image_full.jpg), and the thumbnail (named image_thumb.jpg).

发生什么：在我的上传文件夹中，只有两个图片 - 原始上传的文件image.jpg）和调整大小的文件（image_full.jpg）。

What DOES happen: In my uploads folder, there are only TWO images - the original uploaded file (image.jpg), and the resized file (image_full.jpg). No thumbnail is ever created.

有趣的是，**如果我先放置缩略图创建的代码 ，它会生成缩略图图像，但** NOT 的_full（调整大小）图像。

What's interesting, however, ** is that if I place the code for the Thumbnail creation first, it generates the thumbnail image but **NOT the _full (resized) image.

所以我觉得它不会运行 $ this-> image_lib-> resize（）两次。为什么不？是我做的一些业余的错误，还是我错过了明显的东西？ ：P

So it appears to me that it won't ever run $this->image_lib->resize() twice. Why not? Is it some amateur mistake I'm making, or have I missed something obvious?! :P

谢谢！

杰克

修改：我应该指出是的，我知道我要加载 image_lib 库两次。我怀疑这是向它传递新参数的唯一方法。我也试过，调整完整的形象后，调用 $ this-> _thumbnail（），再次加载库。但仍然发生同样的问题。

I should point out that yes, I know I'm loading the image_lib library twice. I fathomed this was the only way of passing new parameters to it. I also tried, after resizing the full image, calling $this->_thumbnail() which loaded the library again there. But still the same issue occurred.

编辑2：我也尝试使用 $ this-> image_lib - > clear（） - 仍然没有运气。

Edit 2: I've also tried using $this->image_lib->clear() - still no luck.

推荐答案

并用不同的配置初始化它：

You should load the library only once and initialize it with different configs:

$this->load->library('image_lib');

// full image stuff
$this->image_lib->initialize($config);
$this->image_lib->resize();

// thumbnail stuff
$this->image_lib->initialize($config);
$this->image_lib->resize();

这篇关于CodeIgniter / PHP / GD2图像处理正在播放的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！