describe table_name ....! Ans: asort() arsort() ksort() krsort() uksort() sort() natsort() rsort() ....! We can use a simple JavaScript code linked to an event trigger of any form field. In the JavaScript code, we can call the document.form.submit() function to submit the form ....! Cross-site scripting (XSS) is a security exploit in which the attacker inserts malicious coding into an link that appears to be from a trustworthy source. When someone clicks on the link, the embedded programming is submitted as part of the client's Web request and can execute on the user's computer, typically allowing the attacker to steal information. Web forms that dynamically return an error message including user input data make it possible for attackers to alter the HTML that controls the behavior of the form and/or the page. Attackers....! string urlencode(str) where str contains a string like this “hello world” and the return value will be URL encoded and can be use to append with URLs, normaly used to appned data for GET like someurl.com?var=hello%world string urldocode(str) this will simple decode the GET variable’s valueLike it echo (urldecode($_GET_VARS[var])) will output “Hello world” ....! Session hijacking, also known as TCP session hijacking, is a method of taking over a Web user session by surreptitiously obtaining the session ID and masquerading as the authorized user. Once the user's session ID has been accessed (through session prediction), the attacker can masquerade as that user and do anything the user is authorized to do on the network. The session ID is normally stored within a cookie or URL. For most communications, authenticationprocedures are carried out at set up. Session hijacking takes advantage of that practi....! There are two basic things covered here. The form that will be used to post the file data to and the actual program that does the uploading. Further we will discuss the method that PHP itself suggests for uploading files. Process 1 HTML PART <form enctype="multipart/form-data" action="__URL__" method="POST"> <input type="hidden" name="MAX_FILE_SIZE" value="30000" /> Upload a file: <inpu....! <?php$a = 1;$a = $a— + 1;echo $a;?> A. 2B. 1C. 3D. 0E. Null Answer B is correct. ....! SELECT CURTIME(); SELECT CURDATE(); SELECT CURRENT_TIME(); SELECT CURRENT_DATE(); ....! include() The include() statement includes and evaluates the specified file. This also applies to require(). The two constructs are identical in every way except how they handle failure. include() produces a Warning while require() results in a Fatal Error. In other words, use require() if you want a missing file to halt processing of the page. include() does not behave this way, the script will continue regardless. include_once() The include_once() statement includes and evaluates the specified file during the execution ....! www.w3answers.com PHP offers an extremely simple solution to dynamic caching in the form of output buffering. ....! MySQL (pronounced "my ess cue el") is an open source relational database management system (RDBMS) that uses Structured Query Language (SQL), the most popular language for adding, accessing, and processing data in a database. Because it is open source, anyone can download MySQL and tailor it to their needs in accordance with the general public license. MySQL is noted mainly for its speed, reliability, and flexibility The Session Manager session support allows multiple server instances to share a common pool of sessions, known as a session cluster Session clustering setting up methods : #1)First methods, is to have a NFS shared where session will be store. Setting this is quite easy, just a little modification on php.ini file to change the “session.save_path ? directive to point to the NFS share. The main problem with NFS is on high traffic, NFS share is really slow. So synchronisation and data corruption can arrive and ....! Database testing basically include the following. 1)Data validity testing. 2)Data Integritity testing 3)Performance related to data base. 4)Testing of Procedure,triggers and functions. for doing data validity testing you should be good in SQL queries For data integrity testing you should know about referintial integrity and different constraint. For performance related things you should have idea about the table structure and design. for testing Procedure triggers and functions you should be able to understand the sam....! global buffers and per-connection buffers ....!