Login system - PHP Best Codes

Php Code: Login system

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This is a login System, it has 3 files
login.php
register.php
lastmember.php

once a user has been logged in it will return him/her to the home page. to see if they are logged in use the code at the bottom of my script

When a user registers, it will update the lastmember.php page, so you can include it in your home page by using and it shows the last member that signed up. you can add/change the stuff in the last member.php page but i suggest not changing anything, because i hate people saying they changed so and so and it doesn't work. so just leave it alone :P

Enjoy ;)

?Login.php Start? <?php //session_start(); // set your infomation. $dbhost='localhost'; $dbusername='root'; $dbuserpass='root'; $dbname='root'; if (isset($_COOKIE['user'])) { echo "Welcome $_COOKIE[user]"; }else{ //connect to the mysql database server. mysql_connect ($dbhost, $dbusername, $dbuserpass); mysql_select_db($dbname) or die('Cannot select database'); if ($_POST['username']) { //did they supply a password and username $username=$_POST['username']; $password=$_POST['password']; if ($password==NULL) { echo "A password was not supplied"; }else{ $query = mysql_query("SELECT username,password FROM users WHERE username = '$username'") or die(mysql_error()); $data = mysql_fetch_array($query); if($data['password'] != $password) { echo "The supplied login is incorrect"; }else{ $query = mysql_query("SELECT username,password FROM users WHERE username = '$username'") or die(mysql_error()); $row = mysql_fetch_array($query); setcookie("user", "$username", time()+3600); echo "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"1; URL=membersarea.php\">"; } } } ?> <form action='login.php' method='POST'> <table style='border:1px solid #000000;'> <tr> <td align='right'> Username: <input type='text' size='15' maxlength='25' name='username'> </td> </tr> <tr> <td align='right'> Password: <input type='password' size='15' maxlength='25' name='password'> </td> </tr> <tr> <td align='center'> <input type="submit" value="Login"> </td> </tr> <tr> <td align='center'> <a href='register.php'>Register Here</a> </td> </tr> </table> </form> <? }; ?> ?End Of Login.php? ?Register.php start.? <center> <?php // set your infomation. $dbhost='localhost'; $dbusername='root'; $dbuserpass='root'; $dbname='root'; // connect to the mysql database server. mysql_connect ($dbhost, $dbusername, $dbuserpass); mysql_select_db($dbname) or die("Cannot select database"); //Are they just getting here or submitting their info? if (isset($_POST["username"])) { $username = $_POST["username"]; $password = $_POST["password"]; $cpassword = $_POST["cpassword"]; $email = $_POST["email"]; //Was a field left blank? if($username==NULL|$password==NULL|$cpassword==NULL|$email==NULL) { echo "A field was left blank."; }else{ //Do the passwords match? if($password!=$cpassword) { echo "Passwords do not match"; }else{ //Has the username or email been used? $checkuser = mysql_query("SELECT username FROM users WHERE username='$username'"); $username_exist = mysql_num_rows($checkuser); $checkemail = mysql_query("SELECT email FROM users WHERE email='$email'"); $email_exist = mysql_num_rows($checkemail); if ($email_existɬ|$username_existɬ) { echo "The username or email is already in use"; }else{ //Everything seems good, lets insert. $query = "INSERT INTO users (username, password, email) VALUES('$username','$password','$email')"; mysql_query($query) or die(mysql_error()); echo "The user $username has been successfully registered."; } } } } ?> <h1>Register</h1> <form action="register.php" method="POST"> <table style="border:1px solid #000000;"> <tr> <td align="right"> Username: <input type="text" size="15" maxlength="25" name="username"> </td> </tr> <tr> <td align="right"> Password: <input type="password" size="15" maxlength="25" name="password"> </td> </tr> <tr> <td align="right"> Confirm Password: <input type="password" size="15" maxlength="25" name="cpassword"> </td> </tr> <tr> <td align="right"> Email: <input type="text" size="15" maxlength="25" name="email"> </td> </tr> <tr> <td align="center"> <input type="submit" value="Register"> </td> </tr> <tr> <td align="center"> <a href="login.php">Login Here</a> </td> </tr> </table> </form> </center> ?End Of Register.php? ?Lastmember.php start? // set your infomation. $dbhost='localhost'; $dbusername='root'; $dbuserpass='root'; $dbname='root'; //connect to the mysql database server. mysql_connect ($dbhost, $dbusername, $dbuserpass); mysql_select_db($dbname) or die('Cannot select database'); $row1 = mysql_query("SELECT * FROM users ORDER BY uid DESC LIMIT 1") or die(mysql_error()); echo "$row1"; while($row=mysql_fetch_array($row1)) { echo "<h2>$row[username]</h2>"; } ?> ?End of lastmember.php? To check to see if someone is logged in use. <? if (isset($_COOKIE['user'])) { echo "You are logged in: $_COOKIE['user'] Enjoy."; } else{ echo "You are not logged in. <a href='register.php'>Register here</a>"; ?> <br><font face="Tahoma"><a target="_blank" href="http://www.phpfreecode.com/"><span style="font-size: 8pt; text-decoration: none">PHP Free Code</span></a></font>

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prince Posted on 24 January, 2011 - 09:09 AM 1

prince

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prince Posted on 24 January, 2011 - 09:09 AM 2

sir where i can find the register.php? and we're will i put it? in the notepad or what?.. im kinda confuse

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abros2k11 Posted on 24 January, 2011 - 09:09 AM 3

sir, I have 3 seperate webpages with logins. I have created a 4th login page. When I login using my login credentials in the 4th login page I should get Links to the other 3 pages. When i cick on any link it should use the same credentials which I used for the 4th page. i dont have to enter it again, How to do it??

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Salamander Posted on 24 January, 2011 - 09:09 AM 4

how do i use it ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

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joooby Posted on 24 January, 2011 - 09:09 AM 5

It did not work. I can login without password or username!

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joooby Posted on 24 January, 2011 - 09:09 AM 6

It did not work. I can login without password or username!

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rakelechi Posted on 24 January, 2011 - 09:09 AM 7

trying to retrieve data from web_form fields; user input from web form fields into PHP variable value. i need to access values from a data field in the form via PHP script. pls convert this HTML line ...i not able to replace the punctuation marks apprioprately and also, more adition i need... so i can access it right here

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rakelechi Posted on 24 January, 2011 - 09:09 AM 8

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rakelechi Posted on 24 January, 2011 - 09:09 AM 9

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braydenyat Posted on 24 January, 2011 - 09:09 AM 10

1. PUT THE PAGES ON YOUR WEBHOST.
2. MAKE A DATABASE
3. EDIT LASTMEMBER.PHP TO THE DATABASES INFORMATION. For example:
// set your infomation.
$dbhost='localhost';
$dbusername='username';
$dbuserpass='password';
$dbname='databasename';

//connect to the mysql database server.
mysql_connect ($dbhost, $dbusername, $dbuserpass);
mysql_select_db($dbname) or die('Cannot select database');

$row1 = mysql_query("SELECT * FROM users ORDER BY uid DESC LIMIT 1") or die(mysql_error());
echo "$row1";
while($row=mysql_fetch_array($row1))
{
echo "

$row[username]

";
}
?>
Any more questions? email me! braydengyates@aol.com

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teddy Posted on 24 January, 2011 - 09:09 AM 11

hello sir this part make un error""if ($email_existɬ|$username_existɬ) {
echo "The username or email is already in use";
""

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mhervi Posted on 24 January, 2011 - 09:09 AM 12

hello.please help me on doing how to make a simple log in system that when you click the log in it will appear the last output..where you can only use two(2)notepad.

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kahtan Posted on 24 January, 2011 - 09:09 AM 13

hi

how can i make the mysql

so how many tables and users and names and those things

thx for the codes i hope they work for me :)

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Php Code: Login system

$row[username]

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