PHP Interview Questions
Questions Answers Views Company eMail

what are Implode and Explode functions?


8 20773

How can we register the variables into a Session?

HCL, Star Computers, Trikon Networks,

7 20963

What is the difference between the functions UNLINK and UNSET?

Silicon Biztech,

8 15732

What are the different types of Errors in PHP?

TCS, Cisco, Troop Software,

20 48121

What is register_globals in php?

HCL, Millennium, Castling IT, Intel Soft Solutions,

6 19454

How can we submit a form without a submit buttom?

IBM, A1 Technology,

12 13217

What types images that php supports?

1 5645

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

3 8837

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

2 3527

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

1 5245

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

1 2893

How do you get the Browser information?

Life Infotech,

3 7004

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

1 3863

what method is used to generate a random number?

4 5518

How do you develop your own PHP extension ?

2 3990

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Un-Answered Questions { PHP }

What is polymorphism?


what is constructor


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.


Maine 12th ke bad 2 years ka web designing ka course kiya hai. Php me achcha hu. Ek fresher ko is field me kitna mil sakta hai ?


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


How to get best php developer Experience in Php with Sugar CRM / VTiger.


what is benefit of magento?


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


How to genrate report in wordpress cms


what is mean by portal


What are the security measures we have to take for our site not to hack by others?


What is different between software and app


am from learning php&mysql. what will be the approx salary for me if i get a job in coimbatore.


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


sort term descripttion form, report and uery