Real Time PHP 7 Interview Questions with Answers PDF
1. What type of operation is
needed when passing values through a form or an URL?
If we would like to pass values througn a form or an URL then we
need to encode and to decode them using htmlspecialchars() and urlencode().
2. How can PHP and Javascript interact?
PHP and Javascript cannot directly interacts since PHP is a
server side language and Javascript is a client side language. However we can
exchange variables since PHP is able to generate Javascript code to be executed
by the browser and it is possible to pass specific variables back to PHP via
the URL.
3.What is needed to be able to use image function?
GD library is needed to be able execute image functions.
4. What is the use of the function ‘imagetypes()’?
imagetypes() gives the image format and types supported by the
current version of GD-PHP.
5. What are the functions to be used to get the image’s
properties (size, width and height)?
The functions are getimagesize() for size, imagesx() for width
and imagesy() for height.
6. How failures in execution are handled with include() and
require() functions?
If the function require() cannot access to the file then it ends
with a fatal error. However, the include() function gives a warning and the PHP
script continues to execute.
7. What is the main difference between require() and
require_once()?
require() and require_once() perform the same task except that
the second function checks if the PHP script is already included or not before
executing it.
(same for include_once() and include())
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