How to fread() fetch data every 30 seconds without refreshing the page

Question

I’m wanting that function fread() or file_get_contents() search for data in the file every 30s, but without refreshing the page, I tried and couldn’t get how to do it ?

Answer 1

Use ajax to learn more read this document of Mozilla in Portuguese

var xmlhttp = new XMLHttpRequest();
// Mude o valor da variavel url.
var url = "https://api.github.com/users?";

function get(url) {
  xmlhttp.onreadystatechange = function() {
      if (this.readyState == 4 && this.status == 200) {
          var dadosRecebidos = JSON.parse(this.responseText);
          var out = "";
          out += '<a href="' + dadosRecebidos[0].url + '">' + dadosRecebidos[0].login + '</a><br>';
          document.getElementById("resultado").innerHTML = out;
      }
  };
  xmlhttp.open("GET", url, true);
  xmlhttp.send();
  // 30000 milisegundos = 30 segundos
  setTimeout(function(){
    get(url);
  }, 30000);
}
get(url);

<div id="resultado"></div>