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POChecking username and password with php ajax
 

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  1. POChecking username and password with php ajax
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    <p>I am working on a homework related to php. In the assignment, a log on page is wanted. In this log on page, each user is expected to enter his/her username and password. These username and password will be compared with the values in customer table in mysql database. If the password and username agrees with the records under 'cid' and 'name' columns in the customer table, a notice about successful login will be shown.</p> <p>I have 3 php files which are loginGUI.php , check_login.php and db_connect.php.</p> <p>db_connect.php:</p> <pre><code> &lt;?php $db_name="ozcan_b"; // Database name $tbl_name="customer"; // Table name //connect to db $con=mysql_connect("127.0.0.1","xxxxxx","xxxxxx"); mysql_select_db("ozcan_b")or die("cannot select DB"); // Check connection if (mysqli_connect_errno($con)) { echo "Failed to connect to MySQL: " . mysql_connect_error(); exit(0); } ?&gt; </code></pre> <p>loginGUI.php:</p> <pre><code>&lt;?php session_start(); require_once ('db_connect.php'); // include the database connection ?&gt; &lt;html&gt; &lt;head&gt; &lt;title&gt; Login page &lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;h1 style="font-family:Comic Sans Ms;text-align="center";font-size:20pt; color:#00FF00;&gt; Login Page &lt;/h1&gt; &lt;form name="myForm" method="POST" &gt; Username&lt;input type="text" name="userid"/&gt; Password&lt;input type="password" name="pswrd"/&gt; &lt;input type="button" value="Login" id='checklogin' onclick="check()"/&gt; &lt;div id='username_availability_result'&gt;&lt;/div&gt; &lt;/form&gt; &lt;script language="JavaScript"&gt; var xhr_request = false; var checking_html = 'Checking...'; //when button is clicked function check(){ //Check the fields if(document.forms['myForm'].userid.value=="" || document.forms['myForm'].pswrd.value=="") { alert('Please enter your password and your username!'); } else { //else show the cheking_text and run the function to check //$('#username_availability_result').html(checking_html); check_availability(); } } //function to check username availability function check_availability(){ //get the username var userid = document.forms['myForm'].userid.value; var pswrd = document.forms['myForm'].pswrd.value; //use ajax to run the check var request = $.ajax( { url:check.php, type:POST, data:{pswrd:pass, userid:username} success:function() { alert("Success"); } }); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>check_login.php:</p> <pre><code>&lt;?php session_start(); require_once ('db_connect.php'); if(isset($_POST['pswrd']) &amp;&amp; isset($_POST['userid'])) { $sql = "SELECT * FROM users WHERE username='".mysqli_real_escape($dbc, trim($_POST['userid'])."' AND password= '".mysqli_real_escape($dbc, trim($_POST['pswrd'])."'"); $result = mysql_query($dbc, $sql) or die("Could Not make request"); if(mysql_num_rows($result) == 1) { //redirect to the welcome page } else { echo "User Not Found"; } } ?&gt; </code></pre> <p>And my question is that I cannot get any result after ajax , it seems does not work. What is wrong?</p> <p>P.S : I have edited my php files according to the recommendations. Thank you for all , but ajax does not work again. Help me!!</p>
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    1. COWhere are you including the jQuery library? Do you have any other JS or CSS?
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    2. COI did not include any jQuery library!! Where should I include? I am writing all php files by using TextWrangler on mac.
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      1. USBegumm
    3. COPlace this in the `<head>` section of loginGUI.php: `<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>`
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