Question:What do you mean by RSS? 

RSS ( Really Simple Syndication) is a family of web feed formats used to publish frequently updated works—such as blog entries, news headlines, audio, and video—in a standardized format: XML.

Question:What are the advantages of web service? 

Advantage:
1. The ability to treat software as a service.
2. Significantly imporved enterprise application integration (EAI) process.
3. Global reuseability.
4. Ubiquitous accessibility.

Question:How do you encrypt data in php hash function? Use md5() function. 

The md5() function uses MD5, a third-pary hash algorithm often used for creating digital signatures. HD5 is considered to be a one-way hashing algorithm, which means there is no practical way to dehash data that has been hashed using md5().

Prototype:
string md5(string str)

Example:
<?php
   $val="secret";
  $hash_val=md5($val);
   echo $hash_val;
?>

Question:Name and briefly describe the some of PHP framework solutions. 

1. Zend Framework: It is an open source project fostered by the prominent PHP product and services provider Zend Technologies.
2. CakePHP Framework: It most closely corresponds to Rails, and indeed its developers readily mention that the project was originally inspired by the breakout framework. 
3. Solar Framework: An acronym for Simple Object Libray and Application Repository for PHP5, offers an extraordinary number of classes for facilitating rapid application development.
4. Symfony Framework: It is the brainchild of Fabien Potencier, founder of the French Web development firm Senso.