PHP Interview Questions
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when we submit any string in single inverted comma('abc') with get or post method,we will get exact string with single inverted comma('abc')by using $_REQUEST[]. But it is giving (\'abc\'). so anybody please help me to remove that slash,therefore i will get exact string...

2 5803

How session manage in wordpress

HCL, ITBS, TCS,

1 3936

What is the different between cookies and session in php?

13 22366

what are the differents between 'action' and 'target' in form tag?

3 14914

What’s the difference between sort(), assort() and ksort? Under what circumstances would you use each of these?

2 20877

hi to all i am fresher in php and want to learn php and want a fresher job in php. how to total time i expend to learn php and what is freshers salary.

9 9094

How to download a php script directly in your script page?

A1 Technology, Zmanda,

3 5827

Extract url from this string? It should be flexible for all strings, not for this string only. "yahoo.comyahoo.co.inhotmail.org"

A1 Technology,

1 5013

recurring account in PayPal payment gateway?

A1 Technology, HBL, HBL Power Systems, IBM,

1 7972

If there are 10 text boxes in a form having same name, their value are different. Value of which textbox will be received on action script?

A1 Technology, Bajaj, DG, Genpact,

20 18906

Difference between notify url, return url in paypal payment gateway?

A1 Technology, Capital IQ, CMS, Essar, HCL, IAS, Karvy, L&T, State Bank Of India SBI, TATA, Tisco, WNS,

4 32648

what is array_search() in php?

2 5099

How will you sened requests from server1 to server2 from server2 to server3 and so on .. w/o letting the output come to the browser or say the client end in php

Swayam, TCS, Yahoo,

3 7447

How does header() work . What do they tell the server same question for SESSIONS

Yahoo,

2 4509

Describe the differences between the object models in PHP 4 and PHP 5.

1 3205


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Un-Answered Questions { PHP }

How to remove duplicate values from a PHP Array?

521


What is the delimiter default in PHP?

591


Is null function in php?

549


What does $_ post mean in php?

575


What should be the length of variable for SHA256?

508






What is a persistence cookie?

496


How is csrf token generated?

493


Why do we use namespace in php?

442


Which function(s) in PHP computes the difference of arrays?

557


what the new feature add in php 7.2?

522


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.

1717


What are different types of errors available in Php?

479


How can we define a variable accessible in functions of a php script?

533


How do you explain independent and dependent variables?

473


What does session start do in php?

487