PHP Interview Questions
Questions Answers Views Company eMail

What is the exact Diff. between include_once() and require_once() in PHP?

12 21850

Explain Parsing and Execution in PHP? Where PHP Engine Return errors?

CMC,

3 6554

what is the diference between php4 and php5

Tavant Technologies,

2 5675




In How many ways can u represent Not equal?Give Syntax of all ways..

3 5385

=== represents what?

NetTrackers, Ephron Systems,

2 3764

!== represents what?

2 4069

To find out the current year is leap year or not which date() function we've to use.Give the syntax also

5 7257

How many Types of COmments are there in PHP and what are they?

4 10388




How to Define a Constant in PHP? Is $ symbol necessary?

Maples,

6 13013

what will do ceil() and floor() in PHP?

5 9633

How many ways are there for passing variables between pages in PHP and what are they ?

10 7942

Suppose a variable may passed to other page using any of get,post,session,cookie methods and u want to retrive that variable value . what is the syntax?

6 4586

suppose if u want to pass session value using cookies onlu.. what changes i've to made in php.ini file?

1 3524

what is the importence of session.save_path in Php.ini file and wht changes u've to made before using sesssions in ur php program first time?

4 4282

What is the Diff. Between echo() and Print() in PHP?

Syntel, CoreNet, Priya, QueenZend, Sky InfoTech,

29 32515


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Un-Answered Questions { PHP }

How could I install codeignitor ?

1026


How I can control asset documents without GR/IR?

493


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

12686


what is mean by portal

787


sort term descripttion form, report and uery

902






how can i develop forum code? any one pleale help me on this question

859


What are Routines?

1130


what is difference between PHP4 , PHP5

999


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

849


how to open & closing opening period in fico

480


What is Different between Joomla And Magento?

1556


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

905


How to make horizonatl menu and vertical menu responsive

1178


i m a B.E,passed out few yrs bak failed to find good job due to less marks now thinkin of a career as PHP developer. is it a lucarative field and wat r career prospects; hv heard dat initial salary is very less bout 6k also most jobs r contrct jobs.pls guide me need ur valuable advice.pls hellppp!! thnx..

1046


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.

1090