ສະບາຍດີ ຈາກທີ່ຫ່າງຫາຍໄປດົນ ກັບມາຄັ້ງນີ້ ມີບົດຄວາມ ການ Login ແບບໃຊ້ Ajax ໂດຍ PHP
ຊຶ່ງຈະມີຂັ້ນຕອນດັ່ງນີ້
1. Databases code mysql
==============================================================
-- phpMyAdmin SQL Dump
-- version 4.9.0.1
-- https://www.phpmyadmin.net/
--
-- Host: 127.0.0.1
-- Generation Time: Dec 18, 2019 at 05:40 AM
-- Server version: 10.3.16-MariaDB
-- PHP Version: 7.1.30
SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
SET AUTOCOMMIT = 0;
START TRANSACTION;
SET time_zone = "+00:00";
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;
--
-- Database: `mydatabase`
--
-- --------------------------------------------------------
--
-- Table structure for table `account`
--
CREATE TABLE `account` (
`ID` int(10) NOT NULL,
`Username` varchar(100) COLLATE utf8_unicode_ci NOT NULL,
`Pass` varchar(100) COLLATE utf8_unicode_ci NOT NULL,
`code` int(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
--
-- Dumping data for table `account`
--
INSERT INTO `account` (`ID`, `Username`, `Pass`, `code`) VALUES
(1, 'beh', '1234', 1);
--
-- Indexes for dumped tables
--
--
-- Indexes for table `account`
--
ALTER TABLE `account`
ADD PRIMARY KEY (`ID`);
--
-- AUTO_INCREMENT for dumped tables
--
--
-- AUTO_INCREMENT for table `account`
--
ALTER TABLE `account`
MODIFY `ID` int(10) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=2;
COMMIT;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
==================================================================
2. AjaxPHPLoginForm1.php
<html>
<head>
<title>Test Ajax Tutorial</title>
</head>
<script language="JavaScript">
var HttPRequest = false;
function doCallAjax() {
HttPRequest = false;
if (window.XMLHttpRequest) { // Mozilla, Safari,...
HttPRequest = new XMLHttpRequest();
if (HttPRequest.overrideMimeType) {
HttPRequest.overrideMimeType('text/html');
}
} else if (window.ActiveXObject) { // IE
try {
HttPRequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
HttPRequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!HttPRequest) {
alert('Cannot create XMLHTTP instance');
return false;
}
var url = 'AjaxPHPLoginForm2.php';
var pmeters = "tUsername=" + encodeURI( document.getElementById("txtUsername").value) +
"&tPassword=" + encodeURI( document.getElementById("txtPassword").value );
HttPRequest.open('POST',url,true);
HttPRequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
HttPRequest.setRequestHeader("Content-length", pmeters.length);
HttPRequest.setRequestHeader("Connection", "close");
HttPRequest.send(pmeters);
HttPRequest.onreadystatechange = function()
{
if(HttPRequest.readyState == 3) // Loading Request
{
document.getElementById("mySpan").innerHTML = "Now is Loading...";
}
if(HttPRequest.readyState == 4) // Return Request
{
if(HttPRequest.responseText == 'Y')
{
window.location = 'AjaxPHPLoginForm3.php';
}
else
{
document.getElementById("mySpan").innerHTML = HttPRequest.responseText;
}
}
}
}
</script>
<body align="center">
<h1>Login Form</h1>
<form name="frmMain">
<span id="mySpan"></span>
<table width="274" border="1" align="center">
<tr>
<th width="117">
<div align="left">Username</div></th>
<th><input type="text" name="txtUsername" id="txtUsername" size="20"></th>
</tr>
<tr>
<th width="117">
<div align="left">Password</div></th>
<th><input type="password" name="txtPassword" id="txtPassword" size="20"></th>
</tr>
</table>
<br>
<input name="btnLogin" type="button" id="btnLogin" OnClick="JavaScript:doCallAjax();" value="Login">
</form>
</body>
</html>
==================================================================
3. AjaxPHPLoginForm2.php
<?php
session_start();
$strUsername = trim($_POST["tUsername"]);
$strPassword = trim($_POST["tPassword"]);
//*** Check Username ***//
if(trim($strUsername) == "")
{
echo "<font color=red>**</font> Plase input [Username]";
exit();
}
//*** Check Password ***//
if(trim($strPassword) == "")
{
echo "<font color=red>**</font> Plase input [Password]";
exit();
}
$localhost = "localhost";
$root = "root";
$pass = "";
$db_staffdata = "mydatabase";
$con = mysqli_connect($localhost,$root,$pass,$db_staffdata);
mysqli_query($con,"set names utf8");
if(!$con){
die("Connect Faile :".mysqli_connect_error());
}
//*** Check Username & Password ***//
$strSQL = "SELECT * FROM account WHERE Username = '".$strUsername."' and Pass = '".$strPassword."' ";
$objQuery = mysqli_query($con,$strSQL);
$objResult = mysqli_fetch_array($objQuery);
if($objResult)
{
//*** Session ***//
$_SESSION["ID"] = $objResult["ID"];
$_SESSION["Username"] = $objResult["Username"];
$_SESSION["Pass"] = $objResult["Pass"];
$_SESSION["code"] = $objResult["code"];
echo "<p align='center'>";
echo "<BR>";
echo "<span style='color:#99ebff';>";
echo "ຍິນດີຕ້ອນຮັບທ່ານ $objResult[Username] ເຂົ້າສູ່ລະບົບ !!!";
echo "</span>";
echo "<br>";
echo "<meta http-equiv='refresh' content='2;url=./AjaxPHPLoginForm3.php'>";
echo "</p>";
}else{
echo "<font color=red>**</font> Username & Password is wrong";
echo "<p align='center'>";
echo "<span style='color:#ff6666;'>";
echo "ບໍ່ສາມາດເຂົ້າສູ່ລະບົບໄດ້";
echo "ກະລຸນາລອງໃໝ່ອີກຄັ້ງ";
echo "</span>";
echo "<meta http-equiv='refresh' content='2;url=./AjaxPHPLoginForm1.php'>";
echo "</p>";
}
mysqli_close($con);
?>
4. AjaxPHPLoginForm3.php
<?php
session_start();
if($_SESSION["Username"] == "")
{
header("location:AjaxLoginForm.php");
exit();
}
$localhost = "localhost";
$root = "root";
$pass = "";
$db_staffdata = "mydatabase";
$con = mysqli_connect($localhost,$root,$pass,$db_staffdata);
mysqli_query($con,"set names utf8");
if(!$con){
die("Connect Faile :".mysqli_connect_error());
}
$strSQL = "SELECT * FROM account WHERE Username = '".$_SESSION["Username"]."' ";
$objQuery = mysqli_query($con,$strSQL);
$objResult = mysqli_fetch_array($objQuery);
?>
<html>
<head>
<title>test Ajax Tutorial</title>
</head>
<body align="center">
<h1>Welcome [<?php echo $objResult["Username"];?>] to My Website</h1>
</body>
</html>
==================================================================
ຈົບໄປແລ້ວ Code ທັ້ງໝົດທີ່ມີ ຕໍ່ໄປຈະເປັນຂອງສ່ວນ ສະແດງຜົນ
==================================================================
 |
| from login |
 |
| Main login true |
==================================================================
ຈົບໄປແລ້ວສຳຫລັບບົດຄວາມນີ້ ມີຂໍ້ສົງໃສໃດຖາມໄດ້ ຝາກົດຕິດຕາມ ແນ່ເດິ້
