web service database connection - php

Question

I have developed a php web service on a server with mysql database connection. It can not connect to database and does not execute codes after database connection. Also it does not show any error.
If I return something before database connection line, it is returned.
I have tested another php file with database connection and it works properly.
<?php require_once('lib/nusoap.php');
$server = new soap_server();
$server->configureWSDL('ivrmci', 'urn:ivrmciwsdl');
$server->register('upload_file', // method
array('username' => 'xsd:string','password' => 'xsd:string','encoded_filepath' => 'xsd:string','filename' => 'xsd:string'), // input parameters
array('return' => 'xsd:string'), // output parameters
'urn:ivrmciwsdl', // namespace
'urn:ivrmciwsdl#upload_file', // soapaction
'rpc', // style
'encoded', // use
'Uploads files to the server' // documentation
);
$server->register('inquiryMsisdnCalls', // method
array('username' => 'xsd:string','password' => 'xsd:string','callerid' => 'xsd:string','advertise_id' => 'xsd:string'), // input parameters
array('return' => 'xsd:string'), // output parameters
'urn:ivrmci', // namespace
'urn:ivrmci#inquiryMsisdnCalls', // soapaction
'rpc',
'encoded', // style // use
'Returns User Log' // documentation
);
function upload_file($username,$password,$encoded,$name) {
if ($username != "abc" OR $password != "123")
{
return "-2";
}
$location = "uploads/".$name; // Mention where to upload the file
//$current = file_get_contents($location); // Get the file content. This will create an empty file if the file does not exist
$current = base64_decode($encoded); // Now decode the content which was sent by the client
file_put_contents($location, $current); // Write the decoded content in the file mentioned at particular location
try
{
$db = new PDO('mysql:dbname=zzz;host=x.x.x.x',"root","1234",array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8'));
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
}
catch(PDOException $e)
{
return "-3";
}
$filename = explode(".", $name);
$sql = "INSERT INTO advertise (name) VALUES ($filename[0])";
try{
$db->exec($sql);
return $db->lastInsertid();
}
catch(PDOException $e)
{
return $e->getMessage();
}
if($name!="")
{
return "File Uploaded successfully..."; // Output success message
}
else
{
return "Please upload a file...";
}
}
function inquiryMsisdnCalls($username,$password,$callerid,$contentid)
{
if ($username != "abc" OR $password != "123")
{
return "-2";
}
try
{
$db = new PDO('mysql:dbname=zzz;host=x.x.x.x',"root","1234",array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8'));
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
}
catch(PDOException $e)
{
return "-3";
}
$sql = "select status from user_advertise_log where callerId=$callerid and advertise_id=$contentid";
try{
$log = $db->query($sql)->fetch(PDO::FETCH_OBJ);
return $log->status;
}
catch(PDOException $e)
{
return $e->getMessage();
}
}
// Use the request to (try to) invoke the service
$HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA) ? $HTTP_RAW_POST_DATA : '';
$server->service($HTTP_RAW_POST_DATA);
?>