socket_connect () - Error 113 - PHP

I'm trying to make an Arduino receive data in a PHP structure. Quickly explaining, when the user changes the status, between 0 and 1, it would send a signal to the Arduino according to what was chosen and the Arduino receiving this data, depending on it, would turn the LED on or off. The code I use in Arduino is as follows:

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

//Configurações do Ethernet Shield
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192,168,0, 101 }; // ip que o arduino assumirá
byte gateway[] = { 192,168,0, 1 };  // ip do roteador
byte subnet[] = { 255, 255, 255, 0 };

// String que representa o estado dos dispositivos
//char Luz[7] = "0000L#";

EthernetServer server(80); // Cria o servidor na porta 8081

// String onde é guardada as msgs recebidas
char msg[7] = "0000L#";

void setup() {
  Ethernet.begin(mac, ip, gateway, subnet);
  server.begin();
  //pinMode(A0,OUTPUT);
  //pinMode(A1,OUTPUT);
  //pinMode(A2,OUTPUT);
  //pinMode(A3,OUTPUT);
  //pinMode(A4,OUTPUT);
  //pinMode(A5,OUTPUT);
  // Configura o pino d13 como saída 
  pinMode(13, OUTPUT);
}

void loop() {
 EthernetClient client = server.available();
  // SE receber um caracter...
  if (client) {
    // guarda o caracter na string 'msg'
    msg[6] = client.read();

    switch(msg[6]) {
      case 0:
          // Configura o pino 13 como HIGH
          digitalWrite(13, HIGH);
      break;
      case 1:
          // Configura o pino 13 como LOW
          digitalWrite(13, LOW);   
      break;
    }
  }
}

And the code in my file PHP , which communicates with the Arduino is as follows:

$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
    // Se conecta ao IP e Porta:
socket_connect($sock,"192.168.0.101", 80);

if (!socket_connect($sock, "192.168.0.101", 80)){
    die('Socket error : '.socket_strerror(socket_last_error()));
}

$msg = 0;

// Executa a ação correspondente ao botão apertado.
if($status == 0) {
    $msg = 0;
    socket_write($sock,$msg,strlen($msg));
} else if($status == 1){
    $msg = 1;
    socket_write($sock,$msg,strlen($msg));
}

//socket_write($sock,'R#',2); //Requisita o status do sistema.

// Caso ele não receba o status corretamente, avisa erro.
//else { echo "Falha ao receber status da casa."; }
socket_close($sock);

When I change the status and the above code is executed, I get the following error:

socket_connect() unable to connect 113 no route to host

In this case, both the Arduino and my computer are connected to a router and the Arduino "picks up" the IP normally. When I start Arduino, I get the answer normally, but when I execute the code described above, I can not make this communication.