Storing user information
Storing user information we can use following functions
- Cookie
- session
- $_POST[](If browser does not support cookies.)
Cookie :-By using cookies we can pass user information from page to page.with browser page back it does not expires until expiration time is passed.
Ex:-First create html form to pass user information to php file
|
| <html>
<body>
<table>
<form action="c1.php" method="post">
<tr><td>First Name: </td>
<td><input type="text" name="Fname" /></td></tr>
<tr><td>Last Name: </td>
<td><input type="text" name="Lname" /></td></tr>
<tr><td colspan=2><input type="submit" /></td></tr>
</form>
</table>
</body>
</html>
|
Then we will be passing data into 2 php file called c1.php&c2.php
c1.php
<?php
$Fname=$_POST['Fname'];
$Lname=$_POST['Lname'];
setcookie("user", "$Fname $Lname", time()+3600);
echo "welcome"." ".$_COOKIE["user"];
?>
</br><a href=" c2.php">NEXT</a> | Result(input First Name=Angelina,Last name=Jolie)
welcome Angelina Jolie
NEXT |
c2.php
<?php
echo "welcome Again"." ".$_COOKIE["user"];
?> | welcome Again Angelina Jolie |
Session:-By using session also we can pass user information from page to page until it unset or destroy,but with browser back pages it expires.
Ex:-You can use above HTML file to input user information.
|
| <html>
<body>
<table>
<form action="s1.php" method="post">
<tr><td>First Name: </td>
<td><input type="text" name="Fname" /></td></tr>
<tr><td>Last Age: </td>
<td><input type="text" name="Lname" /></td></tr>
<tr><td colspan=2><tr>
</form>
</table>
</body>
</html>
|
s1.php
<?php
session_start();
$Fname=$_POST['Fname'];
$Lname=$_POST['Lname'];
$_SESSION['First_Name']=$Fname;
$_SESSION['Last_Name']=$Lname;
?>
<html>
<body>
<?php
echo "Welcome"." ". $_SESSION['First_Name']." "
.$_SESSION['Last_Name'];
?>
</br><a href=" s2.php">NEXT</a>
</body>
</html>
| Result
Welcome Angelina Jolie
NEXT |
s2.php
<?php
session_start();
?>
<html>
<body>
<?php
echo "Welcome Again"." ". $_SESSION['First_Name']." "
.$_SESSION['Last_Name'];
session_destroy();
?>
</br><a href=" s3.php">NEXT</a>
</body>
</html>
| Welcome Again Angelina Jolie
NEXT |
In
s2.php session has been destroyed.So s3.php displays only Welcome Again.
<?php
session_start();
?>
<html>
<body>
<?php
echo "Welome Again"." ". $_SESSION['First_Name']." ".$_SESSION['Last_Name'];
?>
</body>
</html> | Welcome Again
|
$_POST[]:-You are now familiar with
$_POST with previous post we used $_POST repeatedly
.we can use $_POST when browser does not support cookies.But with $_POST we can pass user information only into one php file otherwise we have to submit it repeatedly.
Ex:-
p1.php can carry the information but
p2.php no information without re submitting information.
<?php
$Fname=$_POST['Fname'];
$Lname=$_POST['Lname'];
echo "welcome"." ".$Fname." ".$Lname;
?>
</br><a href=" p2.php">NEXT</a> | welcome Angelina Jolie
NEXT |
<?php
$Fname=$_POST['Fname'];
$Lname=$_POST['Lname'];
echo "welcome"." ".$Fname." ".$Lname;
?> | welcome |
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