var_dump($_POST); is empty but not var_dump($_POST); die;

i have found some similar topics on this issue, but n开发者_运维问答othing for my case:

i send some post data via form, but the $_POST array is always empty (not null). but when i add a "die;" or "exit;" after var_dump($_POST); i can see all data sent.

maybe its relevant to know, that this is inside a (shopware) plugin which is called on "onPreDispatch".

thanks for any help

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Your (shopware) plugin probably uses output buffering. Which means it will gather all the ecoes and prints until you call ob_flush() which prints all the buffer.

die() function, apart from everything else, also flushes the buffer when called. So, if you do ob_flush() after your echo you should get the needed result.

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the problem was the redirect, which resetted the post although it was after i read the parameters in the request.

i did not know, that shopware saves the desired data (paymentID) in the database. so i switched my plugin back to "onPostDispatch" (this way it will be called after all other actions, one of them saves the data in db). now i can just read the db and get the same data, which was initially in the post array.

i tried to be "the first" who reads the post, but could not work it out. now i am the last who reads it and it works fine.

thanks for all answers! the clue here was "redirect".