PHP Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

PHP Interview Questions

Questions Answers Views Company eMail

How can we do user authentication without using session/cookies ? For ex:- From page1 accepts user name and password and need to check in all other pages whether the user has logged in or not

TCS,

6 11666

1.Where are the sessions storing ? 2.What are the contents of a session file ? 3.If the server is loaded with too many session files there is a possibility of server crash. How can we solve this issue? 4. How does php server identify that the particular session belongs to particular user ? For ex: If two users A and B logged from different machine, separate session files (say 1 and 2) will be created in the server. But how the php knows that 1 belongs to A and 2 belongs to B ?

PA Consulting, TCS,

4 9598

1.Where are the cookies storing ? 2.What is the drawback of using cookies ? 3. If two site is having same cookie name and different values what will be the output if we echo the cookie name from those sites ? How can we solve this issue (How can we specify the domain name)?

TCS,

8 16574

Whether session will work if we disable cookies in client browser ?

10 22558

1. Write a function to swap two values ? $a = 10; $b = 20; echo $a, $b; swap(); // If u want u can pass parameters echo $a, $b; // It should print 20 , 10

Aquasol, Infosys, TCS, Torque Infotech,

14 39691

This question is regarding version control. If two developers are committing the same php file at same time what will happen ? What error it will show (if any) ?

TCS,

2 6875

What is the difference between include and include_once ? Which is one is good in terms of performance ?

Dest,

2 5931

What is the difference between mysql_connect and mysql_pconnect ? Which one is good in terms of performance ?

4 12543

How session works (internal processing of session) ?

ASD Lab, IPSR Solutions,

3 11159

Does not want to see PHPSESSID in the url. How can be done this ?

3 6948

How to check whether cookies are disbled or not in the browser ? If that is the case how do you handle the sessions ?

1 4248

What is serialization / object serialization ?

2 5621

What is the purpose of destructor ?

2 6019

Whether site will complete the execution of the script if Fatal error occurs ?

1 3649

when ever the user logged in the database table the current registered date will be appeared

3 5383

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Un-Answered Questions { PHP }

What is php variable?

1002

Steps for the payment gateway processing?

998

What is difference between single quotes and double quotes in php?

897

What is php stack?

947

How to call javascript function in php on button click?

978

Php program to generate fibonacci series?

1039

What is the purpose of the '.myi' file extension? What do thes file contain?

954

If we login more than one browser windows at the same time with same user and after that we close one window, then is the session is exist to other windows or not? And if yes then why? If no then why?

959

What is var_dump?

1010

What is difference between core php and framework?

977

Explain how you can update memcached when you make changes to php?

1125

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..

2146

How to get useful error messages in php?

1050

How to set cookies in PHP?

1084

What is mean tnq

1526

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