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 11471

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 9475

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 16383

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

10 22295

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 39381

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 6798

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

Dest,

2 5850

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

4 12426

How session works (internal processing of session) ?

ASD Lab, IPSR Solutions,

3 11047

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

3 6841

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

1 4193

What is serialization / object serialization ?

2 5519

What is the purpose of destructor ?

2 5931

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

1 3589

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

3 5274

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Un-Answered Questions { PHP }

What does $_env means?

902

What php framework does wordpress use?

982

Explain about require and include function?

943

Is php still used?

914

Can we embedded directly PHP code into XHTML document? State Whether True or False?

1748

What is php written in?

947

What is a php namespace?

930

What is difference between get and post in php?

1112

What are php strings?

934

Is not null in php?

906

What is list in PHP?

1072

What is prepared statement in php?

1020

Who is known as the father of php?

1088

What is difference between html and php?

890

What is urlencode and urldecode in php?

1070

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