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Q:

How can we display the output directly to the browser?

Answer

To be able to display the output directly to the browser, we have to use the special tags <?= and ?>.

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Subject: PHP

Q:

How many types of Inheritances used in php and how we achieve it?

Answer

As far PHP concern it only support single Inheritance in scripting. we can also use interface to achieve multiple inheritance.

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Subject: PHP

Q:

What are the different functions in sorting an array?

Answer

sort() , rsort(), asort()
ksort()   , usort()
arsort()  , uksort()
natsort() , natcasesort()
array_multisort()

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Subject: PHP

Q:

What is the difference between the functions unlink and unset?

Answer

unlink()-deletes the given file from the file system.
unset() -makes a variable undefined.

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Subject: PHP

Q:

How we get IP address of client,previous reference page etc?

Answer

By using $_SERVER['REMOTE_ADDR'], $_['HTTP_REFERER'] etc.

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Subject: PHP

Q:

What is the use of header() function in php?

Answer

The header() function sends a raw HTTP header to a client. We can use header() function for redirection of pages. It is important to notice that  header()  must be called before any actual output is seen..

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Subject: PHP

Q:

Why we use array_flip

Answer

array_flip exchange the keys with their associated values in array ie. Keys becomes values and values becomes keys.

<?php
$arrayName    = array("course1"=>"php","course2"=>"html");
$new_array    = array_flip($arrayName);
print_r($new_array);
?>

OUTPUT :

Array
(
[php]     => course1
[html]    => course2
)

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Subject: PHP

Q:

Which function would you use to insert a record into a database?

Answer

The dba_insert() function adds a record to a database.

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Subject: PHP