重载属性的间接修改WatimageComponent :: $ file没有效果 [英] Indirect modification of overloaded property WatimageComponent::$file has no effect

问题描述

  $ sizes = array 
我尝试在resize方法中使用foreach循环创建多个不同大小的缩略图。 （
'thumb'=> Configure :: read（'Shop.image_thumb_dimensions'），
'medium'=> Configure :: read（'Shop.image_medium_dimensions'），
' large'=> Configure :: read（'Shop.image_large_dimensions'）
）; 
 
 
 foreach（$ sizes as $ folder => $ size）{
 
 $ destFolder = WWW_ROOT。 $ this-> upload_dir。 DS。 $ folder; 
 
 if（！file_exists（$ destFolder））{
 @mkdir（$ destFolder）; 
} 
 
 $ dimensionsArray = explode（'，'，$ size）; 
 
 $ newWidth = $ dimensionsArray [0]; 
 $ newHeight = $ dimensionsArray [1]; 
 
 $ destFile = $ destFolder。 DS。 $ fileName; 
 
 $ resize = $ this-> __ resize（$ filePath，$ destFile，$ newWidth，$ newHeight）; 
 
} 
  

然后使用resize函数如下：

 私有函数__resize（$ src，$ destFile，$ newWidth，$ newHeight）{
 
 $ this-> Watimage-> setImage（$ src）; 
 $ this-> Watimage-> resize（array（'type'=>'resizecrop'，'size'=> array（$ newWidth，$ newHeight）））; 
 if（！$ this-> Watimage-> generate（$ destFile））{
 //处理错误... 
 return $ this-> Watimage-& 
} 
 else {
 return true; 
} 
 
} 
  

图片大小（大拇指），但后来出现错误：

  b>注意< / b> （8）< / a> ;:重载属性的间接修改WatimageComponent :: $ file没有效果[< b> APP / Plugin / Gallery / Controller / Component / WatimageComponent.php< / b>，line< b> 114< / b> 
  

我不明白我做错了什么？花了几个小时试图搞清楚这一点。

这是组件类中的方法：

  public function setImage（$ file）{
 //删除可能的错误... 
 $ this-> errors = array 
 try 
 {
 if（is_array（$ file）&& isset（$ file ['file']））
 {
 if（isset file ['quality']））
 $ this-> setQuality（$ file ['quality']）; 
 $ file = $ file ['file']; 
} 
 elseif（empty（$ file）||（is_array（$ file）&&！isset（$ file ['file']）））
 {
 throw new Exception（'Empty file'）; 
} 
 
 if（file_exists（$ file））
 $ this-> file ['image'] = $ file; 
 else 
 throw new Exception（'File''。$ file。'does not exist'）; 
 
 //获取扩展
 $ this-> extension ['image'] = $ this-> getFileExtension（$ this-> file ['image']） 
 //获取文件大小
 $ this-> getSizes（）; 
 //创建图像边界
 $ this-> image = $ this-> createImage（$ this-> file ['image']）; 
 $ this-> handleTransparentImage（）; 
} 
 catch（Exception $ e）
 {
 $ this-> error（$ e）; 
 return false; 
} 
 return true; 
} 
  

解决方案

问题最可能是 WaitmageComponent :: $ file 属性的设置

  unset（$ this-> file）; 
  

https://github.com/elboletaire/Watimage/blob/b72e7ac17ad30bfc47ae4d0f31c4ad6795c8f8d2/watimage.php#L706

这样做后，当试图访问现在不存在的 WaitmageComponent :: $文件时，魔法属性访问器 Component :: __ get（）

代替重设变量，

  $ this-> file = array（）; 
  

当然也应正确初始化：

  private $ file = array（）; 
  

I am trying to create several thumbs of different sizes using a foreach loop on a resize method.

$sizes = array(
    'thumb' => Configure::read('Shop.image_thumb_dimensions'),
    'medium' => Configure::read('Shop.image_medium_dimensions'),
    'large' => Configure::read('Shop.image_large_dimensions')
);


foreach($sizes as $folder => $size) {

    $destFolder = WWW_ROOT. $this->upload_dir . DS . $folder;

    if (!file_exists($destFolder)) {
        @mkdir($destFolder);
    }

    $dimensionsArray = explode(',', $size);

    $newWidth = $dimensionsArray[0];
    $newHeight = $dimensionsArray[1];

    $destFile = $destFolder . DS . $fileName;

    $resize =  $this->__resize($filePath, $destFile, $newWidth, $newHeight);

}

and then the resize function which uses some methods from a component goes like this:

private function __resize($src, $destFile, $newWidth, $newHeight) {

    $this->Watimage->setImage($src);
    $this->Watimage->resize(array('type' => 'resizecrop', 'size' => array($newWidth, $newHeight)));
    if ( !$this->Watimage->generate($destFile) ) {
        // handle errors...
        return $this->Watimage->errors;
    }
    else {
        return true;
    }   

}

So this works great for the first image size (the thumb) but thereafter I get the error:

b>Notice</b> (8)</a>: Indirect modification of overloaded property WatimageComponent::$file has no effect [<b>APP/Plugin/Gallery/Controller/Component/WatimageComponent.php</b>, line <b>114</b>

I don't understand what I am doing wrong?? Have spent hours trying to figure this out. Any illumination on the matter will be greatly appreciated.

This is the method from the component class:

public function setImage($file) {
    // Remove possible errors...
    $this->errors = array();
    try
    {
        if ( is_array($file) && isset($file['file']) )
        {
            if ( isset($file['quality']) )
                $this->setQuality($file['quality']);
            $file = $file['file'];
        }
        elseif ( empty($file) || (is_array($file) && !isset($file['file'])) )
        {
            throw new Exception('Empty file');
        }

        if ( file_exists($file) )
            $this->file['image'] = $file;
        else
            throw new Exception('File "' . $file . '" does not exist');

        // Obtain extension
        $this->extension['image'] = $this->getFileExtension($this->file['image']);
        // Obtain file sizes
        $this->getSizes();
        // Create image boundary
        $this->image = $this->createImage($this->file['image']);
        $this->handleTransparentImage();
    }
    catch ( Exception $e )
    {
        $this->error($e);
        return false;
    }
    return true;
}

解决方案

There you go, the initial problem is most probably the unsetting of the WaitmageComponent::$file property

unset($this->file);

https://github.com/elboletaire/Watimage/blob/b72e7ac17ad30bfc47ae4d0f31c4ad6795c8f8d2/watimage.php#L706

After doing so, the magic property accessor Component::__get() will kick in when trying to access the now unexistent WaitmageComponent::$file property, and consequently this results in the warning you are receiving.

Instead of unsetting the variable, it should be reinitialized:

$this->file = array();

And of course it should also be initialized properly:

private $file = array();

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