PHP Sessions

PHP Sessions

PHP Sessions

session is a way to store multiple information in variables(without database) to be used across multiple pages

Hi friends in this lesson we are going to learn php sessions..if you are beginners and don't understand much more about php session please read the topic ..

This topic is included a lots of tricks about php session..

=>Create,Read ,Update and Delete in PHP SESSION..

PHP Sessions

   =>session start:
session started with session_start(); function..
=>create.php to creating new session

<?php
session_start();
//Creating New SESSION Variable called name
$_SESSION['name']='ANJAN';
?>

=> read.php to fetch or read session data

<?php
session_start();
//retrive SESSION data
//checking SESSION['name'] empty or not
if(!empty($_SESSION['name'])){
 echo 'Your SESSION Name: '.$_SESSION['name'];
}else{
 echo "Your SESSION is Empty";
}

?>

=> update.php to update session data

<?php
session_start();

//checking SESSION['name'] empty or not
if(!empty($_SESSION['name'])){
 //Replacing ond name to New one 
 $_SESSION['name']='New Name';
}else{
 echo "Your SESSION is Empty";
}

?>

=> delete.php to unset session data

<?php
session_start();
//checking SESSION['name'] empty or not
if(!empty($_SESSION['name'])){
 unset($_SESSION['name']);
}else{
 echo "Your SESSION is Already Empty";
}

?>

Ok That's it How to set session,read session ,update session and unset session

=>php session page view counter:

count page views using php session

Now In This lesson we are going to learn how to count page views using php session
create count.php page and copy the below codes..
  =>count.php

<?php
session_start();
if(!isset($_SESSION['count'])){
   $_SESSION['count']='0';
}else{
 $_SESSION['count']++;
}
?>
<h3>You have Refresh This Page: <?php if(!empty($_SESSION['count']))
                  {echo $_SESSION['count'].' Times';
     }else{
      echo "You Have not yet Refresh the Page" ;
      }?></h3>
<div><a href="count.php">Refresh</a>

=> Set Website Color in PHP SESSION:

Set and change color in php session

<h3>Change WebSite color using PHP SESSION</h3>
<form method="POST">
 <table>
   <tr>
     <td>Color:</td>
  <td><input type="text" name="color" placeholder="Color Name or Code: #ccc" required/></td>
   </tr>
     <td></td>
  <td><input type="submit" name="submit" value="Change Color"/></td>
   </tr>
 </table>
</form>
<?php
session_start(); 
if(isset($_POST['submit'])){
$_SESSION['color']=$_POST['color'];
}
//define Default Color if SESSION color not set
if(empty($_SESSION['color'])){
 $_SESSION['color']='#ccc';
}?>
<style>
table,h3{
 background:<?php echo $_SESSION['color']?>;
}
</style> 
  <table border="1" cellspacing="0">
     <tr>
     <th>Name</th>
  <th>WebSite</th>
  </tr>
  <tr>
     <td>ANJAN</td>
  <td>CodeNair.Com</td>
  </tr>
  </table>

=> PHP SESSION: Adding Multiple User Data into SESSION:

PHP Sessions

Hi friends now we are going to learn how to store multiple user information into php session ..this is nice session tricks will help you to understand about basic shopping cart..
index.php

<h3>PHP SESSION :Store Multiple User Info In PHP SESSION</h3>
<form method="POST">
 <table>
   <tr>
     <td>UserName:</td>
  <td><input type="text" name="name" required/></td>
   </tr>
   <tr>
     <td>Email</td>
  <td><input type="text" name="email" required/></td>
   </tr>
   <tr>
     <td></td>
  <td><input type="submit" name="submit" value="Add User"/></td>
   </tr>
 </table>
</form>
<?php

session_start(); 
if(isset($_POST['submit'])){
$user=array(
'name'=>$_POST['name'], //Username form field name
'email'=>$_POST['email'] //email form field name
);
$_SESSION['student'][]=$user;  
}
if(isset($_GET['remove'])){
 unset($_SESSION['student']);
 //Redirecting After Unset SESSION
 header('location:index.php');
}
?>
<?php if(!empty($_SESSION['student'])){?>
<table class="table" cellspacing="0" border="1"> 
    <tr>
   <th>Serial</th>
      <th>Name</th>
      <th>Email</th>
    </tr>
   <?php for($i = 0 ; $i < count($_SESSION['student']) ; $i++) {?>
    <tr>
  <td><?php echo $i;?></td>
     <td><?php echo $_SESSION['student'][$i]['name'];?></td>
  <td><?php echo $_SESSION['student'][$i]['email'];?></td>
    </tr>
 <?php }  ?>
</table>
<a href="index.php?remove=remove">Empty User</a>
<?php }else{
 echo "You have no User in SESSION";
}?>

=>PHP SESSION: PHP Shopping Cart using SESSION:

PHP Sessions

Hi friends This is beginner php session based shopping cart lesson..
if you are beginner in php session this will help you to understand about php add to cart..
index.php

<form method="POST">
<table>
   <tr>
      <td>Product ID</td>
   <td><input type="text" name="id" required/></td>
   </tr>
   <tr>
      <td>Name</td>
   <td><input type="text" name="name" placeholder="Ex:Pant ,Shirt,Mobile.." required/></td>
   </tr>
   <tr>
      <td>Quantity</td>
   <td><input type="text" name="qty" placeholder="Ex:2,3,10,50..." required/></td>
   </tr>
   <tr>
      <td></td>
   <td><input type="submit" name="submit" value="Add to Cart"/></td>
   </tr>
</table>
</form>
<?php
session_start();
if(isset($_POST['submit'])){
 $name=$_POST['name'];
 $id=$_POST['id'];
 $info=array(
 "name"=>$name,
 "id"=>$id,
 "qty"=>$_POST['qty']
 );
 $_SESSION['info'][]=$info;
//adding New Products
}
?>
<?php
 if ( !empty($_SESSION["info"]) ) {
 $total = 0;?>
 <table border="1" cellspacing="0">
    <tr>
    <th>ID</th>
    <th>Name</th>
    <th>Quantity</th>
 </tr>
 <?php 
 foreach ( $_SESSION["info"] as $k=>$v ) {

 ?>
    <tr>
 <td><?php echo $_SESSION['info'][$k]['id']; ?></td>
 <td><?php echo $_SESSION['info'][$k]['name']; ?></td>
 <td><?php echo $_SESSION['info'][$k]['qty']; ?></td>
 </tr>
 
 <?php }}?>
</table>

that's it friends all about php session ..Keep visiting for more codes Thank You..