PHP實例
<form action="server.php" method="post"> 
        <input type="text" name="username" class="username" placeholder="Username"> 
        <input type="password" name="password" class="password" placeholder="Password"> 
        <button type="submit">Sign me in</button> 
        <div class="error"><span>+</span></div> 
      </form> 

PHP實例
<?php 
/** 
 * Created by PhpStorm. 
 * User: Administrator 
 * Date: 2016-7-19 
 * Time: 11:50 
 */ 
include "data.php"; 
header("Content-type:text/html;charset=utf-8"); 
//echo "ddd"; 
if ($_SERVER["REQUEST_METHOD"] == "POST") {//第一步 
//  echo "ddd1"; 
  if ($_POST["username"] == $info["username"] && $_POST["password"] == $info["password"]) {//第二步 
    $myArr = $_POST; 
    $myArr = array_merge($myArr, array("loginIP" => $_SERVER["REMOTE_ADDR"], "loginTime" => time())); 
    se($myArr); 
    setcookies($_POST["username"], $_POST["password"]); 
    setStroage($_POST["username"], $_POST["password"]); 
    echo "<script> 
   window.location.href='index.php'; 
  </script>"; 
  } 
} else { 
  echo "<script> 
alert('請登錄'); 
window.location.href='login.html'; 
</script>"; 
} 
//通過session保存到服務器 
function se(array $arr) 
{ 
  session_start(); 
  $_SESSION["username"] = $arr["username"]; 
  $_SESSION["password"] = $arr["password"]; 
  $_SESSION["loginIP"] = $arr["loginIP"]; 
  $_SESSION["loginTime"] = $arr["loginTime"]; 
} 
//通過cookie保存到本地 
function setCookies($username, $password) 
{ 
  setcookie("username", $username, time() + 120); 
  setcookie("password", $password, time() + 120); 
} 
 
//echo "<script> 
// 
//  localStorage.setItem('username','$username'); 
//localStorage.setItem('password'," . "'" . $password . "'" . "); 
//</script>"; 
function setStroage($username, $password){ 
  echo "<script> 
  localStorage.setItem('username'," . "'" . $username . "'" . "); 
  localStorage.setItem('password'," . "'" . $password . "'" . "); 
  </script>"; 
} 

PHP實例
$info=array("username"=>"admin","password"=>"admin"); 

PHP實例
$myArr = $_POST;//把post傳過來的數(shù)據(jù)放在myarr;里面 
    $myArr = array_merge($myArr, array("loginIP" => $_SERVER["REMOTE_ADDR"], "loginTime" => time()));//這是穿的另外兩個參數(shù),一個是用戶登錄地址,另一個是cookie存活時間(會在尋獲時間以為消失) 
    se($myArr); 
    setcookies($_POST["username"], $_POST["password"]);//這個是設置cookie,把傳過來的兩個值設置成cookie,會有一個getCookie進行接收 
    setStroage($_POST["username"], $_POST["password"]); 
    echo "<script> 
  window.location.href='index.php'; 

PHP實例
function intialLoadInfo(){ 
    $("input:text").val(getCoolieByKey("username"));//這兩個就是吧下面獲取的之前輸入過的用戶名和密碼進行自動填寫(實現(xiàn)目的) 
    $("input:password").val(getCoolieByKey("password")); 
  } 
  //通過key值獲取cookie 
  function getCoolieByKey(key){ 
    var cookie=document.cookie.split(";");//這行代碼是吧cookie的值進行分離(split),以便于下面遍歷(分離后就是一個數(shù)組一樣) 
    for(var i=0;i<cookie.length;i++){//遍歷長度 
      var value=cookie[i].trim();//去掉空格 
      if (value.indexOf(key)==0){//判斷是不是第一個值 
        val=value.split("="); 
        console.log(val[0]); 
        return val[1]; 
      } 
    } 
  } 

PHP實例
function se(array $arr) 
{ 
  session_start(); 
  $_SESSION["username"] = $arr["username"]; 
  $_SESSION["password"] = $arr["password"]; 
  $_SESSION["loginIP"] = $arr["loginIP"]; 
  $_SESSION["loginTime"] = $arr["loginTime"]; 
} 

PHP實例
$myArr = array_merge($myArr, array("loginIP" => $_SERVER["REMOTE_ADDR"], "loginTime" => time()));//這是穿的另外兩個參數(shù),一個是用戶登錄地址,另一個是cookie存活時間(會在尋獲時間以為消失) 
    se($myArr); 

PHP實例
$(function (){ 
    if (localStorage.getItem("username")!=""&&localStorage.getItem("password")!=""){ 
      document.getElementById("username").value=localStorage.getItem("username"); 
      document.getElementById("password").value=localStorage.getItem("password"); 
 
    } 
  }); 

PHP實例
function setStroage($username, $password){ 
  echo "<script> 
  localStorage.setItem('username'," . "'" . $username . "'" . "); 
  localStorage.setItem('password'," . "'" . $password . "'" . "); 
  </script>"; 
}