CODEWITHSUNDEEP
phpapache
Manikandan R
Manikandan R

Reputation:

Apache serves blank page

I have created one sample PHP script to upload excel sheets of very bigger sizes. Also the process happening with each records given in the excel sheets is bit complex. To allow bigger sizes, I have added necessary PHP ini values in the Apache configuration file to override the actual PHP ini values.

The problem is, once I upload the bigger files, it takes longer time say 2 minutes or so, after that i am seeing the blank page instead of results page. When I tailed the Apache logs, I didn't see any such lines related to this issue.

Just wanted to know, are there any case/possibilities when Apache could serves blank page?

But when I tailed my application level logs, it is very clear the script has completes the job perfectly. My suspect, may be what could have happen is, once the job completes, while Apache about to serve back the results page something would have happened, but I am not sure about it.

Upvotes: 1

Views: 3062

Answers (5)

Slipo
Slipo

Reputation: 37

Sounds like a memory problem, try increasing memory_limit or optimizing your memory usage

Memory allocation/segfaults errors results on blank pages and no log information.

Upvotes: 0

DreamWerx
DreamWerx

Reputation: 2909

If it's going to take some time to process a request/upload, you may want to consider creating a queue, where the user knows the file was successfully uploaded, and must just wait (can check status on a page perhaps); and you have a cronjob/background process to convert the file(s) and update them. This way it doesn't waste the users time at all.

Upvotes: 0

Raj Kumar
Raj Kumar

Reputation: 7106

You can do two thing to avoid this problem

  1. Ask user to convert excel file into csv if possible in your situation. as csv are much lighter than excel sheet.
  2. try using header("newpage.php") in the script to redirect user to new page

Upvotes: -1

Mojah
Mojah

Reputation: 1373

Is it possible than an "else"-case is not properly handled? You might assume the file was uploaded successfully, but that doesn't necessarily mean it did. Did you only increase the 'upload_max_filesize' or also the 'post_max_size' (the grand total of all your forms: input text + files)?

Try adding the following on the top of your script, to see any errors or warnings PHP might show.

error_reporting(E_ALL);

Upvotes: 1

Kyle Cronin
Kyle Cronin

Reputation: 79093

My guess is that it's not Apache's fault and your browser just times out the connection. You could try some of these techniques and see if that helps any.

Upvotes: 2

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