PHP Interview Questions
Questions Answers Views Company eMail

what are Implode and Explode functions?

HCL,

8 15823

How can we register the variables into a Session?

HCL, Star Computers, Trikon Networks,

7 15561

What is the difference between the functions UNLINK and UNSET?

Silicon Biztech,

8 13127

What are the different types of Errors in PHP?

TCS, Cisco, Troop Software,

20 40175

What is register_globals in php?

HCL, Millennium, Castling IT, Intel Soft Solutions,

6 17483

How can we submit a form without a submit buttom?

IBM, A1 Technology,

12 10482

What types images that php supports?

1 4734

How do you format and output a number with leading zero's?

3 7909

When you will get the error "Cannot add header information"?

2 2743

How to install PHP with --mcrypt and --mhash?

1 4367

How can you access a COM object from a PHP page?

1 2236

How do you get the Browser information?

Life Infotech,

3 5864

How can you parse files that were not ending with .php by using Apache?

1 3166

what method is used to generate a random number?

4 4659

How do you develop your own PHP extension ?

2 3103


Post New PHP Questions


Un-Answered Questions { PHP }

what is the scope of php in the future if any other language is developed then may be php is loss ???

10284


how to use particular city location in php?

1158


What is session and Cokkies . How it works . tell some thing about Session_id()

691


Hello Friends,I am seeking for a job in php having 9 months. exp.Please suggest any company openings.

735


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.

808


discuss the issue of software theft in ghana and how it has affected the economy

499


What is polymorphism?

1001


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

491


what is benefit of magento?

1054


How could I install codeignitor ?

726


how retrive the video file in php using video tag

471


Which is better php praogramming or cad/cam scope wise and also salaray wise?

562


How to make horizonatl menu and vertical menu responsive

885


How to genrate report in wordpress cms

808


What is instantiation?

683