Related products are a popular ecommerce site feature for one simple reason. They work. Customers like related products because they remind them that they need or may want, say, batteries for a camera, extra memory for a new laptop, or shoes that match a new dress. Online retailers like related …
Good on-site marketing, such as related-product promotions, encourages emotion-driven “joy buying,” potentially boosting per-customer revenue and profit. Online shopping can be both a practical and an emotional activity. Often buyers begin an online shopping experience because they seek to save time, save money, or simply for efficiency; but special offers, …
Every PHP session has a timeout value — a duration, measured in seconds — which determines how long a session should remain alive in the absence of any user activity. You can adjust this timeout duration by changing the value of session.gc_maxlifetime variable in the PHP configuration file (php.ini). Unfortunatly relying on …
If you want to remove certain session data, simply unset the corresponding key of the $_SESSIONassociative array, as shown in the following example: <?php // Starting session session_start(); // Removing session data if(isset($_SESSION[“lastname”])){ unset($_SESSION[“lastname”]); } ?> However, to destroy a session completely, simply call the session_destroy() function. This function does not need any …
You can store all your session data as key-value pairs in the $_SESSION[] superglobal array. The stored data can be accessed during lifetime of a session. Consider the following script, which creates a new session and registers two session variables. <?php // Starting session session_start(); // Storing session data $_SESSION[“firstname”] = “Peter”; …
These kinds of attacks can occur when your application builds HTTP headers or emails based on the data input by a user on a form. These won’t directly damage your server or affect your users, but they are an open door to deeper problems such as session hijacking or phishing …
SQL injection is a type of attack that tries to perform actions on a database used by the target web site. This typically involves sending a SQL request in the hope that the server will execute it (usually when the application server tries to store data sent by a user). …
Cross-Site Scripting (XSS) and Cross-Site Request Forgery (CSRF) are common types of attacks that occur when you display data sent by a user back to the user or to another user. XSS lets attackers inject client-side script into Web pages viewed by other users. A cross-site scripting vulnerability may be …
An HTML entity is a piece of text (“string”) that begins with an ampersand (&) and ends with a semicolon (;) . Entities are frequently used to display reserved characters (which would otherwise be interpreted as HTML code), and invisible characters (like non-breaking spaces). You can also use them in place of other characters that are difficult to type with …
Idempotence is a funky word that often hooks people. Idempotence is sometimes a confusing concept, at least from the academic definition. From a RESTful service standpoint, for an operation (or service call) to be idempotent, clients can make that same call repeatedly while producing the same result. In other words, …