$_POST is empty , what is going wrong

I am posting an array from page-1 as follows:

var params = {};
params[‘id’] = idtval;
params[‘pswd’] = pswd;
params[‘inithint’] = inithint;
params[‘fnhint’] = fnhint;
params[‘lnhint’] = lnhint;

var paramsJ = JSON.stringify(params);


xmlhttp.setRequestHeader(“Content-type”, “application/x-www-form-urlencoded”);
xmlhttp.setRequestHeader(“Content-length”, paramsJ.length);
xmlhttp.setRequestHeader(“Connection”, “close”);


In page-2, using FireBUG, it appears in the header as 4 good parameters.

But I cannot seem to get anything out of $_POST. It appears empty.
I have tried a lot of very rookie syntax attempts as follows and nothing works:

<?php $json = stripslashes($_POST["id"]); $output = json_decode($json); echo $output; $id = $_POST["paramsJ"]["id"]; echo "starts here: ", $id; echo $id; $id = $_POST['id'][0]; echo "2nd echo", $id; echo $id; $id = htmlspecialchars( $_POST['id']); echo "3rd echo", $id; echo $id; $id = $_POST['id']; echo "4th echo", $id; echo $id; echo "Dump here: "; var_dump($_POST['paramsJ']); Please help.

Oops. I meant to write 5(five) good parameters.

If you want to do it like this you should really post the fields in another way, read more here


Or you can catch what you have now with reading the raw data


$data = json_decode(file_get_contents(‘php://input’));


Best solution, use Jquery… It’s just way easier to both write and read.

[php]$("#yourForm").submit(function(event) {

var $form = $(this),
url = $form.attr( “action” ),
formData = {
id: $form.find( “input[name=‘idtval’]” ).val(),
pswd: $form.find( “input[name=‘pswd’]” ).val(),
inithint: $form.find( “input[name=‘inithint’]” ).val(),
fnhint: $form.find( “input[name=‘fnhint’]” ).val(),
lnhint: $form.find( “input[name=‘lnhint’]” ).val()

var posting = $.post( url, formData );

posting.done(function(response) {

Thank you JimL.
Your suggestion of:

$data = json_decode(file_get_contents(‘php://input’));

worked perfectly. I would never have found that in a year of looking but need to research it now.

Also, your final suggestion of JQuery looks interesting. I will have to research that to understand the form and event pointers.
Thanks again.

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