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PHP session-Simulating the function of a shopping cart

Source: Internet
Author: User
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1, PHP default is not to open the session, to use the session in two ways: (1) use Session_Start (), display the open session. (2) Find the following line in php.ini: Find Session.auto_start = 0, set 0 to 1. The following is a simulation of the shopping cart program to show the basic operation of the seeion.

session1.php

1<?PHP2 //session_start ();3?>4<! DOCTYPE html>567<title>storing anArrayWith a session</title>89<body>Ten One<?PHP A if(isset($_post[' Form_products '])){ -     if(!Empty($_session[' Products '])){ -         $products=Array_unique( the             Array_merge(unserialize($_session[' Products ']),$_post[' Form_products '])); -             $_session[' Products ']=Serialize($products); -     } -     Else{ +         $_session[' Products ']=Serialize($_post[' Form_products ']); -     } +     Echo"<p>your Products has been registered!</p>"; A } at?> -<form method= "POST" action= "<?php Echo$_server[' php_self '];?> "> -<p> -<label for= "Form_products" >select some products:</label><br/> -<select id= "form_products" name= "form_products[" "multiple=" multiple "size=" 3 "> -<option value= "Sonic screwdriver" >sonic screwdriver</option> in<option value= "Hal" >hal 2000</option> -<option value= "Tardis" >Tardis</option> to<option value= "Transportor" >Transportor</option> +</select> -</p> the<button type= "Submit" name= "Submit" value= "Choose" >submit form</button> *</form> $<p><a href= "session2.php" >go to content page</a> </p>Panax Notoginseng</body> -
session2.php
1<! DOCTYPE html>234<title>storing anArrayWith a session</title>56<body>78<?PHP9 if(isset($_post[' Form_products '])){Ten     if(!Empty($_session[' Products '])){ One         $products=Array_unique( A             Array_merge(unserialize($_session[' Products ']),$_post[' Form_products '])); -             $_session[' Products ']=Serialize($products); -     } the     Else{ -         $_session[' Products ']=Serialize($_post[' Form_products ']); -     } -     Echo"<p>your Products has been registered!</p>"; + } -?> +<form method= "POST" action= "<?php Echo$_server[' php_self '];?> "> A<p> at<label for= "Form_products" >select some products:</label><br/> -<select id= "form_products" name= "form_products[" "multiple=" multiple "size=" 3 "> -<option value= "Sonic screwdriver" >sonic screwdriver</option> -<option value= "Hal" >hal 2000</option> -<option value= "Tardis" >Tardis</option> -<option value= "Transportor" >Transportor</option> in</select> -</p> to<button type= "Submit" name= "Submit" value= "Choose" >submit form</button> +</form> -<p><a href= "session2.php" >go to content page</a> </p> the</body> *
PHP session-Simulating the function of a shopping cart

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