PIR and Photosensor open light

int photosensor = A4; // initialize pins
int PIR = A5;
int Relay = 6;
int PIRState; //variable for state PIR sensor

void setup() {
  pinMode(Relay, OUTPUT); 
  pinMode(PIR, INPUT);
  Serial.begin(9600);
}

void loop(){
 
  Serial.print("Analog reading = "); // for debuging show in serial monitor
  Serial.println(analogRead(photosensor));

  if (analogRead(photosensor) >= 850) { // dark if the value of photosensor is biger than 850
   
    Serial.print("Dark");
   
    PIRState = digitalRead(PIR); // then get the value of the PIR sensore
    // if detect move the PIRState is HIGH if not move then is LOW
    if (PIRState == HIGH) { 
      
      digitalWrite(Relay, LOW); // open the relay to give power on leds
      delay(5000); // delay to stay on the leds
      
      Serial.print("Motion PIR"); // debugiing show in serial monitor
      
      PIRState == LOW; // set the PIRState low no motion-movement
    
    }else { // if have not movement-motion close the relay
       Serial.print("No motion");
       digitalWrite(Relay, HIGH);
    } 
    
  }else { // the photosensor take value for day and the relay close
        // we not check the PIR sensore
    digitalWrite(Relay, HIGH);
    Serial.print("Day No light need");
  }
  delay(1000);
}