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Send data to PHP page POST method from android application

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Hi all,


I have an android application which communicates with a php page to insert data into mysql table. it was functioning well on an windows server. Recently we were forced to move the application to a linux sever for some other reason. After that some error is returned. When I cross checked every thing, no data is received from the android application to the php page.

Android send data using post method. Content type is "application/x-www-form-urlencoded". Data is encoded using UTF-8 format.


I can see the variables values correctly in android app. But when we fetch it in Php page "null" is returned. When we assign a value in php page it works


The same code was working finely on windows server. So I have concluded that problem was with the server settings.

Default charset of server was not UTF-8 and I asked server team to set it so and they did the same adding the following code .htaccess file


// .htaccess code


suPHP_ConfigPath /home/vyapary/php.ini
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access 1 week"
ExpiresByType image/jpeg "access 1 week"
ExpiresByType image/gif "access 1 week"
ExpiresByType image/png "access 1 week"
ExpiresByType text/css "access 1 week"
ExpiresByType application/pdf "access 1 week"
ExpiresByType application/x-javascript "access 1 week"
ExpiresByType application/x-shockwave-flash "access 1 week"
ExpiresByType image/x-icon "access 1 week"
ExpiresDefault "access 2 days"
<ifModule mod_gzip.c>
mod_gzip_on Yes
mod_gzip_dechunk Yes
mod_gzip_item_include file .(html?|txt|css|js|php|pl)$
mod_gzip_item_include handler ^cgi-script$
mod_gzip_item_include mime ^text/.*
mod_gzip_item_include mime ^application/x-javascript.*
mod_gzip_item_exclude mime ^image/.*
mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*
<IfModule mod_php5.c>
php_value default_charset "UTF-8"
<IfModule mod_php5.c>
php_value safe_mode off
<IfModule mod_php4.c>
php_value safe_mode off
Is there any other setting to be changed or added in .htacess to get it working
Android code
String pdts=jsonobj.toString();
String citms=citm.toString();

url = new URL("http://www.mydom.in/myphppage.php");

String pdtsenc=URLEncoder.encode(pdts, "UTF-8");
String citmsenc=URLEncoder.encode(citms, "UTF-8");
String param = "cdt=" + pdtsenc +
"&idt=" + citmsenc;
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
PrintWriter out = new PrintWriter(conn.getOutputStream());
Php code
$cdt = urldecode($_POST['cdt']);
//this returns null
$cdt = json_decode($cdt , true);
$idt = urldecode($_POST['idt']);
// this returns null
$idt = json_decode($idt , true);
Please suggest a solution for this
Thanks in Advance!!!


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json_decode() returns null if the input string is not valid JSON. You should print out the string and see what's wrong with it.


urlldecode() should not be necessary because the content is already decoded before being put into the $_POST array.

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$cdt = urldecode($_POST['cdt']);


$idt = urldecode($_POST['idt']);


the above code is what returns null


if we assign the following data respectively to cdt and idt and decode it using json_decode it works





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PHP automatically URL-decodes values in $_GET and $_POST, you don't need to do that manually. Also, make sure that you do not have actual quote characters in those values, characters like those should be URL-encoded also.

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