laravel imagesx() 期望参数 1 是资源，布尔值给定
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imagesx() expects parameter 1 to be resource, boolean given
提问by Nyxynyx
I am using a image thumbnailing library (Laravel's resizer bundle) which takes a jpg from a directory and uses imagesx()to save that image in a different size. This works without error most of the time.
我正在使用图像缩略图库（Laravel 的 resizer包），它从目录中获取 jpg 并用于imagesx()以不同的大小保存该图像。这在大多数情况下都不会出错。
Problem:However sometimes when there is a batch of images to be processed, I get the error below. While debugging, I did
问题：但是有时当要处理一批图像时，我会收到以下错误。在调试时，我做了
....
print_r($this->image);
imagesx($this->image);
....
PHP output
PHP输出
Resource id #64Resource id #67Resource id #73Resource id #76Resource id #82Resource id #85Resource id #91Resource id #94Resource id #100Resource id #103Resource id #109Resource id #112Resource id #118Resource id #121Resource id #127Resource id #130Resource id #136Resource id #139Resource id #145Resource id #148Resource id #154Resource id #157Resource id #163Resource id #166
Unhandled Exception
Message:
imagesx() expects parameter 1 to be resource, boolean given
Location:
/home/dev/public_html/bundles/resizer/resizer.php on line 69
Stack Trace:
#0 /home/dev/public_html/laravel/laravel.php(40): Laravel\Error::native(2, 'imagesx() expec...', '/home/dev/publi...', 69)
#1 [internal function]: Laravel\{closure}(2, 'imagesx() expec...', '/home/dev/publi...', 69, Array)
#2 /home/dev/public_html/bundles/resizer/resizer.php(69): imagesx(false)
#3 /home/dev/public_html/bundles/resizer/resizer.php(81): Resizer->__construct('/home/photos/pu...')
#4 /home/dev/public_html/application/controllers/crawl/cl.php(369): Resizer::open('/home/photos/pu...')
#5 /home/dev/public_html/application/controllers/crawl/cl.php(315): Crawl_CL_Controller->save_photos(Array, 2516533, '2012-09-17 18:4...')
#6 [internal function]: Crawl_CL_Controller->action_crawl_next_item()
#7 /home/dev/public_html/laravel/routing/controller.php(325): call_user_func_array(Array, Array)
#8 /home/dev/public_html/laravel/routing/controller.php(285): Laravel\Routing\Controller->response('crawl_next_item', Array)
#9 /home/dev/public_html/laravel/routing/controller.php(165): Laravel\Routing\Controller->execute('crawl_next_item', Array)
#10 /home/dev/public_html/laravel/routing/route.php(153): Laravel\Routing\Controller::call('crawl.cl@(:1)', Array)
#11 /home/dev/public_html/laravel/routing/route.php(124): Laravel\Routing\Route->response()
#12 /home/dev/public_html/laravel/laravel.php(165): Laravel\Routing\Route->call()
#13 /home/dev/public_html/public/index.php(34): require('/home/dev/publi...')
#14 {main}
Together with the stack trace above, you can see that $this->imageis falseright after its Resource id #166.
连同上面的堆栈跟踪，你可以看到，$this->image是false其之后Resource id #166。
Any idea what may have caused this? I dont understand why it can sometimes be false. Thanks!
知道是什么原因造成的吗？我不明白为什么有时会这样false。谢谢！
采纳答案by Maikel D
This is happening because the mime type for that file isn't being recognised or is not a jpg/jpeg/png/gif.
发生这种情况是因为该文件的 MIME 类型未被识别或不是 jpg/jpeg/png/gif。
The $this->image is being set to false on line 196 in resizer.php.
$this->image 在 resizer.php 的第 196 行被设置为 false。
If you can't get it to work, please create an issue on Github so I can follow it up :-)
如果你不能让它工作，请在 Github 上创建一个问题，以便我可以跟进:-)
