Difference between PHP4 and PHP5

Advantages of PHP5

Static Methods and Variables

Visitbility
Public , Private and Protected

Abstract Classes

Interfaces

Magic Methods

Final Keyword

__autoload Function

Type Hinting

Exceptions



Ref: http://www.webmaster-talk.com/php-forum/78717-differences-between-php4-and-php5.html

Read Wordpress Interview Question

Read Wordpress Interview Question

http://blogbysid.wordpress.com/2013/05/31/wordpress-interview-questions-and-answers/

http://einterviewquestions.com/php/wordpress/wordpress-basics/page/2/

http://www.globalguideline.com/forum/viewtopic.php?id=1597

http://ldopensource.wordpress.com/2013/05/14/wordpress-interview-questions-and-answers/

http://interviewquestionsforu.com/wordpress.php

Read PHP Interview Question

http://www.steppingstone.in/10-common-php-interview-questions-for-php-jobs-for-freshers-in-indore/

http://vijaymodi.wordpress.com/2008/01/25/php-interview-questions-and-answers/

http://www.sandykadam.com/programming-stuff/php/php-basic-interview-questions/

http://www.careercup.com/page?pid=php-interview-questions

http://www.phpfaqs.in/php-interview-questions-answers.php?start=60

http://www.techinterviews.com/php-interview-questions-part-2