|| Login Systems ||

[Dan Williamson]

Ok, i've been seeing a lot of people wanting log-in systems.

I Did NOT Write this code, i got it off Pixel2life.com so i take no credit for this script. Although it's not that difficult to create a log-in script.

Firstly you'll need PHP and a MySQL Database.

Here we go.

Assume that such a form is coded into a file named register.html. The following HTML code excerpt is a typical example. When the user has filled in all the fields, the register.php page is called when the user clicks on the Submit button

[form name="register" method="post" action="register.php"]

[input name="login id" type="text" value="loginid" size="20"/][br]

[input name="password" type="text" value="password" size="20"/][br]

[input name="email" type="text" value="email" size="50"/][br]

[input type="submit" name="submit" value="submit"/]

[input type="reset" name="reset" value="reset"/]

[/form]

The following code excerpt can be used as part of register.php to process the registration. It connects to the MySQL database and inserts a line of data into the table used to store the registration information.

@mysql_connect("localhost", "mysql_login", "mysql_pwd") or die("Cannot connect to DB!");

@mysql_select_db("tbl_login") or die("Cannot select DB!");

$sql="INSERT INTO login_tbl (loginid, password and email) VALUES (".$loginid.”,”.$password.”,”.$email.”)”;

$r = mysql_query($sql);

if(!$r) {

$err=mysql_error();

print $err;

exit();

} 

The code excerpt assumes that the MySQL table that is used to store the registration data is named tbl_login and contains 3 fields – the loginid, password and email fields. The values of the $loginid, $password and $email variables are passed in from the form in register.html using the post method.


A registered user will want to log into the system to access the functionality provided by the website. The user will have to provide his login id and password for the system to verify and authenticate.



This is typically done through a simple HTML form. This HTML form typically contains 2 fields and 2 buttons:

1. A login id field

2. A password field

3. A Submit button

4. A Reset button



Assume that such a form is coded into a file named authenticate.html. The following HTML code excerpt is a typical example. When the user has filled in all the fields, the authenticate.php page is called when the user clicks on the Submit button.

form name="authenticate" method="post" action="authenticate.php"]

[input name="login id" type="text" value="loginid" size="20"/][br]

[input name="password" type="text" value="password" size="20"/][br]

[input type="submit" name="submit" value="submit"/]

[input type="reset" name="reset" value="reset"/]

[/form]

The following code excerpt can be used as part of authenticate.php to process the login request. It connects to the MySQL database and queries the table used to store the registration information.

@mysql_connect("localhost", "mysql_login", "mysql_pwd") or die("Cannot connect to DB!");

@mysql_select_db("tbl_login") or die("Cannot select DB!");

$sql="SELECT loginid FROM login_tbl WHERE loginid=’".$loginid.”’ and password=’”.$password.”’”;

$r = mysql_query($sql);

if(!$r) {

$err=mysql_error();

print $err;

exit();

}

if(mysql_affected_rows()==0){

print "no such login in the system. please try again.";

exit();

}

else{

print "successfully logged into system.";

//proceed to perform website’s functionality – e.g. present information to the user

} 

As in component 1, the code excerpt assumes that the MySQL table that is used to store the registration data is named tbl_login and contains 3 fields – the loginid, password and email fields. The values of the $loginid and $password variables are passed in from the form in authenticate.html using the post method


A registered user may forget his password to log into the website’s system. In this case, the user will need to supply his loginid for the system to retrieve his password and send the password to the user’s registered email address.



This is typically done through a simple HTML form. This HTML form typically contains 1 field and 2 buttons:

1. A login id field

2. A Submit button

3. A Reset button



Assume that such a form is coded into a file named forgot.html. The following HTML code excerpt is a typical example. When the user has filled in all the fields, the forgot.php page is called when the user clicks on the Submit button.

[form name="forgot" method="post" action="forgot.php"]

[input name="login id" type="text" value="loginid" size="20"/][br]

[input type="submit" name="submit" value="submit"/]

[input type="reset" name="reset" value="reset"/]

[/form]

The following code excerpt can be used as part of forgot.php to process the login request. It connects to the MySQL database and queries the table used to store the registration information.

@mysql_connect("localhost", "mysql_login", "mysql_pwd") or die("Cannot connect to DB!");

@mysql_select_db("tbl_login") or die("Cannot select DB!");

$sql="SELECT password, email FROM login_tbl WHERE loginid=’".$loginid.”’”;

$r = mysql_query($sql);

if(!$r) {

$err=mysql_error();

print $err;

exit();

}

if(mysql_affected_rows()==0){

print "no such login in the system. please try again.";

exit();

}

else {

$row=mysql_fetch_array($r);

$password=$row["password"];

$email=$row["email"];



$subject="your password";

$header="from:[email protected]";

$content="your password is ".$password;

mail($email, $subject, $row, $header);



print "An email containing the password has been sent to you";

} 

As in component 1, the code excerpt assumes that the MySQL table that is used to store the registration data is named tbl_login and contains 3 fields – the loginid, password and email fields. The value of the $loginid variable is passed from the form in forgot.html using the post method.



Now people will ask why i didn't just send you a link to this website.

Now the reason is, people mainly want it handed to them on a plate so i did just this, this members system is a pathetically easy one to make

- Dan

[craigg.]

Nice!

+ Rep , Keep It Up

[[N]]

Good one +rep

[Dan Williamson]

Thanks for the comments and the rep, but i take no credit for this tutorial.

- Dan

[craigg.]

You may not have wrote parts of it, But im sure it will help many people throughout this forum that need help with PHP

I will be making a portfolio soon, So I may put the script to the test

I dont know if this is included in the PHP source's, But, You may want to include; If the user does not log in, He or she cannot view other pages? It would display another page possibly saying "Please log-in"

Well done.

[Dan Williamson]

Thanks dude.

I'm working on my Own login script for my site.

Getting hosting and proper domain next week

- Dan

[craigg.]

Thats Great! , Please PM me you URL once you get your domain, I would love to Join

All the best creating your site!

May I ask what it will be about? - Tutorials?
Something you may want to include on your site, Thats if it will be a tutorial website; Is to include downloadable source's For registered members

[Dan Williamson]

It will be a full webpage design site, with HTML,PHP,CSS,Javascript,Vb6

Tutorials and it will also have full downloads and more for registered members, the URL will be Raremandan.co.uk

- Dan

[craigg.]

Ill be sure to check it out once made.

Good luck with the website, As I said before, I may write a couple tutorials sometime for your website

[Dan Williamson]

Thanks dude, i just registered on Solace City forum

- Dan