Caching generated images with PHP -

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I am trying to cache the images that have been generated. Can you create an image by accessing the file by resize.php? Width = x & amp; Height = y If the image of that width and height does not exist, then I am using the image path to make it. However, if it is in existence, then it is served to the visitor.

! The file_exists ($ name) check works fine, then it is not processed if it is not needed. 

  If (! File_exists ($ name))  
 Is my reading wrong or false? // image processing here header} ("content-type: image / PNG"); Header ("expiration: Saturn, 25 July 2020 10:00:00 GMT"); Readfile ($ name);

Thanks.

If I had to do this, then if I do not present the image, then processing the image The saved folder must be saved if the file exists, then redirect it to the header ('location:')


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