Hi

I had a very good discussion on digg.com  on my this articles and a few follows pointed out my typos in the articles, for example defining Integer values as string and not putting $ sign with the variable 'bonus' in the salary example, I have fixed it on this site and also on the other sites. Thanks for your positive feedback.

At the same time I received some negative criticism from people that I want to answer.

1) a person criticised that why didn't I use "hellow world" as the first programme of php?

well, it is the most stupid thing I have heard from some person who is commenting a php article. Hello World programme has nothing to do with PHP and it is not must to post it as the first PHP programme.

2) Concatenation: I person said that why did I use echo "hello!" .", " . "Haroon"; and he talked about the use of comma to concatenate. Well both are correct, you can use dot or comma to concatenate strings and there is nothing wrong with it. You should follow what is comfortable for you.

3) Some said, why didn't I post articles to set up the php environment?

well, they should read my article again, in the very start of my article I have given links to four such articles in which I talk about installing php environment on windows and linux both.

anyway, I always pick the healthy criticism and it's most welcome. I will try to avoid typos in my coming articles. I love my approach of teaching PHP and I have thousands of students around the world who are following my articles on different technologies. I write articles for my own satisfaction. Though I am very open to healthy criticism, please do tell me if you think I can improve my writing or can add some additional stuff to my articles I will lovet o do so.

Regards,

Haroon Ahmad