PHP Interview Questions
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when we use ob_start() function in php then the header() and session_start() does not gives the error like header already sent,please explain in brief

2 8644

why header() gives the error like header already sent in php please explain in brief

KMK,

1 2187

what is mean php ? is it designingtool or language? how ill create website using by php?

1 1532




What IS PHP?

Reliance,

3 3259

how many types of inheritance is there in php? name there?

10 15020

which function used to get the number of days between two given dates in php

1 2705

what is pear in php in brief ?

1 1734

how long a default session stay in php?

8 4034




where to change in php.ini file for file uploading?

1 2324

how many error types in php? name there?

5 10111

describe arguments in header in php?

1 2593

difference of move(), and copy() function in php?

3 5588

explain in brief type juggling in php?

1 2256

which function used to get the file name in php?

5 4303

How can we find the number of rows in a result set using PHP?

2 2475


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Un-Answered Questions { PHP }

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.

1146


how retrive the video file in php using video tag

778


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

946


write a note on Testing the web site

762


Binary tree question - Node has numeric data (int) The function takes depth as argument and sum all the value of the node of the depth. For instance, (0) depth 0 / \ 10 20 depth 1 / \ / \ 40 50 60 70 depth 2 so if you pass get_sum(2), you would return 220 which is 40+50+60+70 (sum of depth2) write the function.

876






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

577


What is polymorphism?

1391


what is difference between PHP4 , PHP5

1065


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

12807


What is a class in php programing?

1295


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

897


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

3096


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

1825


How I can control asset documents without GR/IR?

545


What is different between software and app

554