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How check variable is set or not in php?


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More PHP Interview Questions

Do you know design patterns. List few?

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What is helper function?

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How do i explode this string '||25||34||73||94||116||128' i need to have a array like this array ( 0 => '25', 1 => '34', 2 => '73', 3 => '94', 4 => '116', 5 => '128' ) explode("||", $array); didnt work for me i get this array array ( 0 => '', 1 => '25', 2 => '34', 3 => '73', 4 => '94', 5 => '116', 6 => '128', )

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What is a closure in php?

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What are psrs?

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Where are the session values stored?

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How can we check the value of a given variable is a number?

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m new to xampp i want to configure file server in xampp... is it possible ??? if so help me....

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What is the difference between php 5 and php 7?

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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

6 Answers   TCS,


What is session in PHP. How to remove data from a session?

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Questions on OOP concepts 1. What are the access specifiers available in php ? Explain 2. What is object cloning ? 3. What are the differences between interface and abstract class ? 4. What is overloading ? 5. What is overriding ? 6. How to prevent function overriding ? 7. What is the use of "final" keyword ? 8. What is static variable ? How will access a static variable ? What is static class ?

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