General Knowledge Quiz - Question & Answers Set - 14

General Knowledge Quiz - Question & Answers Set - 14

Question 1 :
What Is a Session
A session is a temporary set of variables which is stored in the server.A session is a logical object created by the PHP engine to allow you to preserve data across subsequent HTTP requests. There is only one session object available to your PHP script

Question 2 :
What is the function to start a session
session_start();

Question 3 :
How many ways can we get the value of current session id
session_id() returns the session id for the current session.

Question 4 :
How can we retrieve a session variable value
We can use global array $_SESSION[ÔÇÿvariablenameÔÇÖ] to retrieve data,where ÔÇÿvariablenameÔÇÖ is the name of our variable.

Question 5 :
What is a cookie
Cookie is a tiny bit of information stored in the client machine. We can set the expiration time of a cookie. setcookie(name, value, expire, path, domain); accessing cookie vale $_COOKIE["name"];

Question 6 :
What Is a Persistent Cookie

Question 7 :
What is difference between require (), include ()
Difference between require() and include() is that require() produces a FATAL ERROR if the file you want to include is not found. require() stop the further execution of the program as soon as it encounters and error., while include() only produces a WARN

Question 8 :
What are the differences between include and include_once
The include_once() statement includes and evaluates the specified file during the execution of the script. This is a behavior similar to the include() statement, with the only difference being that if the code from a file has already been included, it wil

Question 9 :
What is Superglobals in PHP
In order to store information coming from both the client and server and pertaining to the current execution of a script PHP has a series of arrays defined these arrays are called superglobals.There 9 superglobal arrays. $GLOBALS[] : The complete list o

Question 10 :
What Are The Different Types Of Errors In PHP

Question 11 :
What is the difference between $message and $$message

Question 12 :
What does a special set of tags do in PHP
The output is displayed directly to the browser.

Question 13 :
How can we define a constant in PHP
Via define() directive, like define ("NEWCONSTANT", 100);

Question 14 :
What is urlencode and urldecode
urlencode() returns the URL encoded version of the given string. URL coding converts special characters into % signs followed by two hex digits. urldecode() returns the URL decoded version of the given string.

Question 15 :
What is the function to upload a file in PHP

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General Knowledge Quiz - Question & Answers Set - 14