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 check the value of a given variable is alphanumeric?

983

Tell me how to find the position of the first occurrence of a substring in a string?

963

What does $_cookie means?

960

What is faster in php?

1055

What is the use of mysql_real_escape_string() function?

927

Explain which cryptographic extension provide generation and verification of digital signatures?

1004

How do I escape data before storing it into the database?

970

Explain me how failures in execution are handled with include() and require() functions?

1023

How is it possible to return a value from a function?

1006

How to update memcached when you make changes to php?

965

What are the encryption techniques in php?

1003

Tell me what is use of in_array() function in php?

1092

Tell us what is the difference between session_unregister() and session_unset()?

998

What is the use of the function htmlentities?

1095

Tell me whether it is possible to share a single instance of a memcache between multiple php projects?

981

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Un-Answered Questions { PHP }

What are the php variables?

1008

What is the purpose of constant() function?

1138

Which framework is best for php?

962

How can you send http header to the client in php?

1005

What is the best way to avoid email sent through php getting into the spam folder?

987

How to get the IP address of the client/user in PHP?

957

Difference between array_combine and array_merge?

1149

What is the use of callback in php?

993

How to call a php function from html button?

1072

What is difference between echo and print in php?

924

What are examples of dependent variables?

929

Why is node js better than php?

1120

Where are cookies stored php?

910

Explain me what are the 3 scope levels available in php and how would you define them?

1200

Why constructor is not overridden?

996

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