IGNOU Best Coaching Institute in delhi NiPS Provide PHP Question Answer

PHP Question Answer By IGNOU Best Coaching Institute in Delhi NiPS Institute 

For IGNOUFriend & IGNOU BCA MCA Students

  What is PHP?

PHP is a server side scripting language commonly used for web applications. PHP has many frameworks and cms for creating websites.Even a non technical person can cretae sites using its CMS.WordPress,osCommerce are the famus CMS of php.It is also an object oriented programming language like java,C-sharp etc.It is very eazy for learning

  What is the use of "echo" in php?

It is used to print a data in the webpage, Example: <?php echo 'Car insurance'; ?> , The following code print the text in the webpage

  How to include a file to a php page?

We can include a file using "include() " or "require()" function with file path as its parameter.

  What's the difference between include and require?

If the file is not found by require(), it will cause a fatal error and halt the execution of the script. If the file is not found by include(), a warning will be issued, but execution will continue.

  require_once(), require(), include().What is difference between them?

require() includes and evaluates a specific file, while require_once() does that only if it has not been included before (on the same page). So, require_once() is recommended to use when you want to include a file where you have a lot of functions for example. This way you make sure you don't include the file more times and you will not get the "function re-declared" error.

  Differences between GET and POST methods ?

With a GET method, you are sending your data via the URL. While, with A POST method, data is embedded in the form object and sent directly from your browser to the server. POST is a bit more safe than GET because GET could be stored in the history.

  How to declare an array in php?

Eg : var $arr = array('apple', 'grape', 'lemon');

  What is the use of 'print' in php?

This is not actually a real function, It is a language construct. So you can use with out parentheses with its argument list.

Example print('PHP Interview questions');

print 'Job Interview ');

  What is use of in_array() function in php ?

in_array used to checks if a value exists in an array

  What is use of count() function in php ?

count() is used to count all elements in an array, or something in an object

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