PHP Interview Questions
Questions Answers Views Company eMail

How can we do user authentication without using session/cookies ? For ex:- From page1 accepts user name and password and need to check in all other pages whether the user has logged in or not

TCS,

6 6776

1.Where are the sessions storing ? 2.What are the contents of a session file ? 3.If the server is loaded with too many session files there is a possibility of server crash. How can we solve this issue? 4. How does php server identify that the particular session belongs to particular user ? For ex: If two users A and B logged from different machine, separate session files (say 1 and 2) will be created in the server. But how the php knows that 1 belongs to A and 2 belongs to B ?

TCS, PA Consulting,

4 5463

1.Where are the cookies storing ? 2.What is the drawback of using cookies ? 3. If two site is having same cookie name and different values what will be the output if we echo the cookie name from those sites ? How can we solve this issue (How can we specify the domain name)?

TCS,

8 10556




Whether session will work if we disable cookies in client browser ?

10 14210

1. Write a function to swap two values ? $a = 10; $b = 20; echo $a, $b; swap(); // If u want u can pass parameters echo $a, $b; // It should print 20 , 10

Infosys, TCS, Torque Infotech, Aquasol,

14 24833

This question is regarding version control. If two developers are committing the same php file at same time what will happen ? What error it will show (if any) ?

TCS,

2 4128

What is the difference between include and include_once ? Which is one is good in terms of performance ?

Dest,

2 3883

What is the difference between mysql_connect and mysql_pconnect ? Which one is good in terms of performance ?

4 9520




How session works (internal processing of session) ?

ASD Lab, IPSR Solutions,

3 8642

Does not want to see PHPSESSID in the url. How can be done this ?

3 4185

How to check whether cookies are disbled or not in the browser ? If that is the case how do you handle the sessions ?

1 2562

What is serialization / object serialization ?

2 3400

What is the purpose of destructor ?

2 3665

Whether site will complete the execution of the script if Fatal error occurs ?

1 1909

when ever the user logged in the database table the current registered date will be appeared

3 2590


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Un-Answered Questions { PHP }

How I can control asset documents without GR/IR?

545


what are interfaces and Abstart classes

825


How could I install codeignitor ?

1073


write a note on Testing the web site

760


sort term descripttion form, report and uery

960






is that "enumerated array" equal to "numeric array"?

1389


I need to know about the courses which are useful in corporate companies.. especially php/mySQL, Java/j2ee, .NET.. also tell if any other courses are valuable

868


What is different between software and app

553


"mysql_fetch_row — Get a result row as an enumerated array",this sentence comes from the PHP offical manual.However ,i can not understand the words "enumerated array".I need some help.Thanks a lot to everyone that reply.

836


What is mean tnq

304


4 down vote favorite share [g+] share [fb] share [tw] I am developing my site using server side sessions using redis as backend for saving the session. Now the issue which is bothering me is of user leaving the website without logging out. I mean user simply closes the browser which causes the cookie to be deleted. Now session of that user still exists on the server and will not be used again as new login requires creating a new session due to security reasons. To avoid the case where hacker steals the old cookie and use it after user login again with same old session id. In essence user leaves the website without explicitly logging out and his session will be deleted after certain time limit of inaccessibility. I am thinking time limit of 30-60 minutes. Also with every new request from user his cookie will also be updated to keep track of when the user last time accessed the site. But nowadays, people let site remain open for long time without accessing it. For example users open facebook and gmail in new tabs and forget about them for 2-3 hours and still they are not asked to login again. Is letting a 2-3 hours old cooke access the session secure? My concern is someone steals user cookie and use it 2-3 hours later. Thinking on this topic has also forced me to question how facebook manages security if user can use a session where they are not accessing it for long periods of time and still they remain logged in. Or is it not secure for me to keep logged in when am not accessing the site session for longer period of time? It can be the case also there is some pinging mechanism using which sites keep track of user having their site open in a browser and when browser closes they are notified and can work accordingly. My website is a social network and needs all those security and usage features which a social network may need. I am new to web security and web development in general and may be the case where my above questions may seem a little basic. If you feel that is the case kindly point to some good reference where I can read and find answers to my question.

1145


What is polymorphism?

1390


what is the current salary package in India for a PHP programmer who has 1.5 years experience

1823


hello all, I need some sample placement papers in lion bridge.. can anyone help me?

897


How to genrate report in wordpress cms

1112