arduino+wifi shield+php

HI i want to upload ultrasonic sensor value to website,but its not showing on website . i was stuck with this for the past one week ,if anyone have already done this kind of project please help me.

below is the arduino code and i am attaching php files also

#include <SPI.h>
#include <WiFi.h>

// EDIT: Change the 'ssid' and 'password' to match your network
const int TrigPin = 2; 
const int EchoPin = 3;
float z;

char ssid[] = "*******"; //  your network SSID (name) 
char pass[] = "*********";    // your network password (use for WPA, or use as key for WEP)
int keyIndex = 0; 
int status = WL_IDLE_STATUS;
WiFiClient client;

// EDIT: 'Server' address to match your domain
char server[] = "192.168.19.171"; // This could also be 192.168.1.18/~me if you are running a server on your computer on a local network.

// This is the data that will be passed into your POST and matches your mysql column


void setup() {
  Serial.begin(9600);
  pinMode(TrigPin, OUTPUT_FAST); 
  pinMode(EchoPin, INPUT_FAST);
  
  connectWifi();

  // You're connected now, so print out the status
  printWifiStatus();
  
  postData();
}

void loop() {

}

void connectWifi() {
  // Attempt to connect to wifi network
  while ( status != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    status = WiFi.begin(ssid, password);
    // Wait 10 seconds for connection
    delay(10000);
  }
}

void printWifiStatus() {
  // Print the SSID of the network you're attached to
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // Print your WiFi shield's IP address
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // Print the received signal strength
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}

// This method makes a HTTP connection to the server and POSTs data
void postData() {
  // Combine yourdatacolumn header (yourdata=) with the data recorded from your arduino
  // (yourarduinodata) and package them into the String yourdata which is what will be
  // sent in your POST request
 
fastDigitalWrite(TrigPin, LOW); 
  delayMicroseconds(2); 
  fastDigitalWrite(TrigPin, HIGH); 
  delayMicroseconds(10);
  fastDigitalWrite(TrigPin, LOW); 
   // duration = pulseIn(echoPin, HIGH);
  z= pulseIn(EchoPin, HIGH) / 58.0;
 
  
   
  Serial.print("distance is ");
   Serial.print(z);
    Serial.println(" cm");
  delay(1000);

  // If there's a successful connection, send the HTTP POST request
  if (client.connect(server, 80)) {
    Serial.println("connecting...");

    // EDIT: The POST 'URL' to the location of your insert_mysql.php on your web-host
   // client.println("POST /insert_mysql.php HTTP/1.1");

client.print("POST /prudhvi/us.php?z=");// This
    client.print(z);
    client.println(" HTTP/1.0"); 
    client.println("Host:192.168.19.171");
    client.println("Connection: close");
    client.println();

    // EDIT: 'Host' to match your domain
    //client.println("Host: www.yourdomain.com");
    //client.println("User-Agent: Arduino/1.0");
    //client.println("Connection: close");
    //client.println("Content-Type: application/x-www-form-urlencoded;");
   // client.print("Content-Length: ");
    
    client.println();
  
  } 
  else {
    // If you couldn't make a connection:
    Serial.println("Connection failed");
    Serial.println("Disconnecting.");
    client.stop();
  }
}

us.php.txt (380 Bytes)

hi anyone done this kind of project previously?