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 11690

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 9618

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 16607

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

10 22614

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 39756

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 6887

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

Dest,

2 5946

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

4 12569

How session works (internal processing of session) ?

ASD Lab, IPSR Solutions,

3 11175

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

3 6963

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

1 4263

What is serialization / object serialization ?

2 5638

What is the purpose of destructor ?

2 6022

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

1 3659

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

3 5405

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Un-Answered Questions { PHP }

What is difference between include,require,include_once and require_once()?

1063

Where is the functions php in wordpress?

1086

What's the output of the ucwords function in this example?

1046

Code to upload a file in PHP?

1032

How is it possible to propagate a session id?

997

How do you connet mysql database with php?

1067

How to convert strings to upper or lower cases?

1002

What is the goto statement useful for?

1004

What are the php functions?

1021

Is ruby on rails php?

963

How to insert an new array element in array?

1038

What is the use of print_r function in php?

940

What is reference variable php?

1024

What is the different between count() and sizeof() in php?

954

Does exist in php?

977

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