trying to send data using POST from android to sql

I am trying to POST data from my android to my sql server

This is in my android application

List<NameValuePair> nameValuePairs = new ArrayList<NameVa开发者_开发知识库luePair>();
nameValuePairs.add(new BasicNameValuePair("firstName",value));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);

This is my php

$firstName = $_POST["firstName"];

$sql = "SELECT firstName FROM `colleague` WHERE `lastName` 
   LIKE '%$firstName%' LIMIT 0, 5 ";
$result = mysql_query($sql);

while($row = mysql_fetch_array($result)) $output[] = $row['firstName'];

echo implode("<br/>",$output);
print(json_encode($output));

But this now selects the first five rows .. it does not receive anything in $firstName = $_POST["firstName"]; ??

php Notice

Undefined index: firstName in C:\xampp\htdocs\

http declaration

HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://192.168.1.1/Search.php");

$firstName = $_POST['firstName']; try single quotations. do you have spaces in the value for $firstName? if it is encoded, do decoding in php. Example if you have Your(space)Name then encoded form will be Your+Name, if you dont decode it the query has encoded value for $firstName. Use urldecode($_POST['firstName']) to decode the encoded url content