I found the answer in documentation.

strval() --> num 2 str
intval() --> str 2 num

Of course. Apache is full compatible with PHP. Install them in this order : Apache, PHP (do the settings), MySQL.

Later on, you may have problems while combining Apache and PHP. If so, have a look...

I have an HTML which posts a form to a PHP page. The PHP page encodes the password from the form using md5() function. And then I tried to save this MD5 code into a file using fwrite() function.
...

My platform is Apache 2.?, PHP 5, WinXP.

Apache gives an error message on this line :
LoadModule php5_module "C:/Prog/PHP/php5apache2.dll"
in the "httpd.conf" file.

Can any of you attach his...

Thanks. That is what I was exactly looking for.

I heard a rumour that there is a program named "PHP Tripod" that does the same thing as PHP, MySQL and Apache. Like "three in one".
The reason I am looking for this program is having troubles with...

That is all OK.

But,what is this "SENDMAIL BINARY"?

So, how can I install a mail server to my computer. Isn't there a way for sending mail without setting the page onto an external (real) web server?

Sorry that I have forgot to write that my page is not on a web server. It is on my computer.
The PHP script is being run on "Apache 2.0 - PHP 5 - WinXP" platform.

Here is code for sending e-mail which I wrote down :

And here is the given error :

What should I do? Please help me...

I searched it on google.com, found out lots of results.
But all tries to decieve people.

Also "http://www.domaindlx.com/" supports ASP,
but not PHP...

Does anybody know a free web server that supports PHP?