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 11705

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 9629

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 16627

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

10 22638

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 39784

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 6899

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

Dest,

2 5950

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

4 12579

How session works (internal processing of session) ?

ASD Lab, IPSR Solutions,

3 11187

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

3 6971

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

1 4274

What is serialization / object serialization ?

2 5650

What is the purpose of destructor ?

2 6028

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

1 3667

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

3 5417

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Un-Answered Questions { PHP }

How do you destroy a session?

918

How to send email using php script?

1051

How is csrf token generated?

992

What are traits?

1282

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

989

What is smarty?

969

What is the current php version?

1091

Is php better than python?

984

Is php 5 still supported?

1003

What are majic methords in php?

1099

Tell me how a constant is defined in a php script?

935

Tell me what is the difference between the functions strstr() and stristr()?

1060

What is php data type?

976

How do I start a php session?

997

What does the initials of php stand for?

964

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