Have a session_start(); at the very top of the page in php like this:
<?php
session_start();
?>
Then write a login form:
<form action="login.php" method = "POST">
<input type = "text" name = "username">
<input type = "password" name = "password">
<input type = "submit" value = "submit">
</form>
now start a new page called login.php. Put session_start(); at the top of the page again. Now you'll have two different $_POST variables from the form that got submitted. It's $_POST['username'] and $_POST['password']. the "name" of the input is what the $_POST variable is. And it's a $_POST because of the method of the form. Now you should change the names of the $_POST just to make it easier.
<?php
$username = $_POST['username'];
$password = $_POST['password'];
?>
Now it's time to see if that username and password are in the database
<?php
$mysql = "SELECT COUNT(*) FROM users WHERE username = '$username' AND password = '$password'"; // Select statement to find user
$query = mysql_query($mysql); // Query to see if user exists
$result = mysql_query($query); // Result for query. Should be either 1 or 0.
if ($result != 1)
{
?>
<script>
alert ("That username or password doesn't exist");
</script>
<meta http-equiv="refresh" content = "1; URL = index.php">
<?php // Javascript alert saying that username or password was wrong then loading the page back to the main page.
}
else
{
$_SESSION['username'] = $username; // Setting the variable for the username so now you can use $_SESSION['username'] anywhere on your website to display who is logged in.
}
?>
You have to put session_start(); at the top of every webpage though. Now for the logout. Create a page called logout.php. You can link to this page however you'd like. All you need for this page is:
<?php
session_destroy(); //destroys the current session
<meta http-equiv="refresh" content = "1; URL = index.php"> //Reloads the page back to the index.php
?>
We can use php tags in different ways. <?php //php code to be written here ?> OR <? //php code ?> This tag will not work when we using editors such as macromedia dreamweaver. OR < script language="php"> //php code </script>
< ?php // This is an example of comment in PHP /* This is another example of comment in PHP and we can write comments in multiple lines using this method */ ? >
if you're using a session, you can simply use the unset function: unset($_SESSION); session_unset(); session_destroy(); good luck !
The PHP question mark "<?" is a signal to the web server that everything up until "?>" will be PHP code and should be treated accordingly.
If you are looking to create an executable (.exe) file on windows then I highly recommend this program to compile your php source code to an exe file.
If you mean how to create a login code with HTML, you need a tag called and a tag called and something in another programming language, such as php or java. There is no login code necessary to use HTML.
The best place to find a guide on how to make a login script in php is the PHP Easy Step website. They offer a step by step tutorial on how to create login scripts.
See the link. This will display all zip related functions.
write php coding for online carrier guidance and placement unit
This is usually done through PHP, which is a scripting language. If you are looking for a forum with login and registration, there are several programs around for free that you can use. Otherwise if you need something other than a forum, you will probably need to learn PHP which can take weeks to learn and years to master. I would suggest searching for PHP code or getting a book on learning PHP.
If you would like to code this by yourself, you need to understand SQL language and php, and also (maybe) html. But, you can also find some scripts to download for free, like this one: free-php-login-script.com. It works great!
Yep. We do it all the time. One way is to simply tell PHP that you want the tags echoed. Like so: <?php echo('<b>Hi</b> Nice to meet you!'); ?> Sometimes you want instead to simply use the PHP in parts of a page and leave the rest. You can do this, too. <body> <div class="login"> <?php if($user->loggedIn()){ ?> <b>Hi!</b> <?php }else{ ?> <!-- HTML FORM HERE --> <?php } ?> </div> </body>
The preferred way is to simply alter the session superglobal. <?php $_SESSION['variable'] = "value"; ?>
Most social networks are written in PHP. To write one, you would probably need to know HTML, CSS, and PHP. Once you are proficient those languages, you'll be able to write a social network.
We can write php extension is many way... .php , .php5, .php4
Well if you know php then you can write your own algorithm php syntax is <?php //open php tag $num = 1; $num2 = 2; $total = $num + $num2; echo $total; ?> //close php tag
A host that allows you to write in PHP