PHP Interview Questions
Questions Answers Views Company eMail

How do I open a file to write content to?

Rushmore Consultancy,

1 2853

How can I check if a value is already in an array?

Rushmore Consultancy,

3 4448

How can I add text to an image?

Rushmore Consultancy, IPSR Solutions,

1 3433




How can I find the colour of a pixel of an image?

Rushmore Consultancy,

2 2748

How can I find the width and height of an image resource?

Rushmore Consultancy,

2 3949

How can I rotate an image?

Rushmore Consultancy,

1 3014

How can I loop through the members of an array?

Rushmore Consultancy,

1 2633

How can I reverse sort an array keeping the correlation between the index and value?

Rushmore Consultancy,

2 3649




How can I reset an array in PHP?

TCS, Rushmore Consultancy,

4 8772

How do I add to the beginning of an array and find the number of elements in it?

Rushmore Consultancy,

1 2789

How can we submit a form without a submit button? What is the use of obj_star?

Rushmore Consultancy,

2 3226

How can we submit a form without a submit button?

HCL, Infosys, ABC, Wipro, Rushmore Consultancy, Torque Infotech, Kept Bug, Panys, zCon Solutions,

23 69224

i was set new individual folder for saving session values,the folder name is session and i set 777 permission,using session.save_path function like session.save_path "/home21b/sub004/sc21311-ULCX/candyoflove.com/session/" but it causing Warning: Unknown(): SAFE MODE Restriction in effect. The script whose uid/gid is 12112/12112 is not allowed to access /home21b/sub004/sc21311-ULCX/candyoflove.com/session owned by uid/gid 12267/12267 in Unknown on line 0 ,please tell what changes make this script, i was using .htaccesss file..plz help me....

1 1417

how to use between operator when retrieve from database(format-2008-jun-06)

3 2891

how to upload 100mb file using .htaccess..

2 4121


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Un-Answered Questions { PHP }

if you run the app program all vendor open items are cleared but is it possible to reverse the again again open items please tell me the answer

455


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

750


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

802


why did u want to leave your past organisation?

830


"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.

728






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.

1044


what is mean by portal

737


What is different between software and app

460


can you give me an example code of calling java script function in php variable using AJAX.or with out ajax??????

607


what are interfaces and Abstart classes

715


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

814


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

12537


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 ?

3917


armstrong number by using php while number is given by the keyboard.?

946


can we swap two different string using php for example:-- before swapping:-- 1 string :-hello friend, 2 string :-my dear, after swapping that strings will be: 1.hello dear, 2.my friend.

2243