I'm trying to connect the arduino mega and ethernet shield and try to send some data to a php script. I have connect the ethernet shield to the laptop. Lap is connected to router through wi-fi. Any help in advance please.

#include <SPI.h>
#include <Ethernet.h>

/******************** ETHERNET SETTINGS ********************/

byte mac[] = { 0x90, 0xA2, 0xDA, 0x0D, 0x85, 0xD9 };   //physical mac address
byte ip[] = { 192, 168, 1, 5 };                   // ip in lan
byte subnet[] = { 255, 255, 255, 0 };              //subnet mask
byte gateway[] = { 192, 168, 0, 1 };              // default gateway

IPAddress server(192,168,1,2);
EthernetClient client;

void setup() {
    Serial.begin(9600);  // Initialize serial communications with the PC
    while (!Serial);     // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
    Ethernet.begin(mac,ip,gateway,subnet);     // initialize Ethernet device
    Serial.print("My IP address: ");
    for (byte thisByte = 0; thisByte < 4; thisByte++) {
      Serial.print(Ethernet.localIP()[thisByte], DEC);
      Serial.print(".");
    }
    Serial.println();
    Serial.println("connecting....");
}

void loop()
{     
  if (client.connect(server,1234)) { // REPLACE WITH YOUR SERVER ADDRESS
    Serial.println("Server connection OK");
    client.println("GET /add.php?temp1=10&hum1=20 HTTP/1.1");
    client.println("Host:" + server);// SERVER ADDRESS HERE TOO
    client.println("Content-Type: text/plain");
  } else {
    Serial.println("connection failure");
  }
  
  if (client.connected()) {
    client.stop();// DISCONNECT FROM THE SERVER
    Serial.println("disconnected");
  }
  
  delay(5000); // WAIT FIVE MINUTES BEFORE SENDING AGAIN
}

Serial Out Put

My IP address: 192.168.1.5.
connecting....
connection failure
connection failure
connection failure
connection failure
connection failure
connection failure
connection failure