php $_POST array empty upon form submission

Question

I have a custom CMS i\'ve built that works perfectly on my dev box (Ubuntu/PHP5+/MySQL5+).

I just moved it up to the production box for my client and now all form su

Answer 1

I know this question was about POST via a Form, but came here looking for answers for similar issue when POSTing with JSON content-type. Found the answer and wanted to share it as it cost me much time.

When using JSON content-type the $_POST array will not populate (only with multi-part forms I believe)

Here is what did work to correct the issue:

$rest_json = file_get_contents("php://input");
$_POST = json_decode($rest_json, true);

hope this helps someone!

Answer 2

same issue here!

i was trying to connect to my local server code via post request in postman, and this problem wasted my time alot!

for anyone who uses local project (e.g. postman): use your IPv4 address (type ipconfig in cmd) instead of the "localhost" keyword. in my case:

before:

localhost/app/login

after:

192.168.1.101/app/login

Answer 3

In addition to MRMage's post:

I had to set this variable to solve the problem that some $_POST variables (with an large array > 1000 items) disappeared:

suhosin.request.max_vars = 2500

"request", not "post" was the solution...

Answer 4

I came across a similar yet slightly different issue and it took 2 days to understand the issue.

• In my case also POST array was empty.

• Then checked with file_get_contents('php://input'); and that was also empty.

Later I found that browser wasnt asking confirmation for resubmitting form data after If I refresh the page loaded after POST submission. It was directly refreshing page. But when I changed form URL to a different one it was passing POST properly and asked for resubmitting data when attempted to refresh page.

Then I checked what is wrong with actual URL . There were no fault with URL, however it was pointing to a folder without index.php in URL and I was checking POST at index.php.

Here I doubted the redirection from / to /index.php causes POST data to be lost and tested URL with appending index.php to the URL.

That Worked.

Posted it here so someone would find it helpful.

Answer 5

I could solve the problem using enctype="application/x-www-form-urlencoded" as the default is "text/plain". When you check in $DATA the seperator is a space for "text/plain" and a special character for the "urlencoded".

Kind regards Frank

Answer 6

Make sure you use name="your_variable_name" in input tag.

I mistakenly use id="your_variable_name".

I spent much time to catch the bug.