is ‘easyphp’ is compelete technology to design a phpmysql?

Yes,easyphp include webserver,php and mysql

What types images that php supports?

imagetypes ? Return the image types supported by this PHP
build
This function returns a bit-field corresponding to the
image formats supported by the version of GD linked into
PHP. The following bits are returned, IMG_GIF | IMG_JPG |
IMG_PNG | IMG_WBMP | IMG_XPM

Example 1. imagetypes()

In PHP how many size data can upload by default?

As far i know it depends on your limitations specified by
your hosting provider but not by your script. In general
when you are uploading large file sizes it is advisable to
use FTP protocol to load them into your server. For small
filesizes you can load them using HTTP.

Functions in IMAP, POP3 AND LDAP?

Examples of IMAP Functions:

1. imap_list : Read the list of mailboxes
2. imap_open : Opens an IMAP stream to mailbox

Examples of LDAP Functions:

1. ldap_connect : This will connect to the ldap server with
the given login credentials.
2. ldap_search : By using this command we can search in ldap
records.

How can we create a database using PHP and mysql?

mysql_create_db() is used to create database in mysql.

How can we encrypt and decrypt a data presented in a table using MySQL?

You can use functions: AES_ENCRYPT() and AES_DECRYPT() like:
AES_ENCRYPT(str, key_str)
AES_DECRYPT(crypt_str, key_str)

What is the diffrence between Notify URL and Return URL?

Notify URL is used to just notify the status while processing. Return URL is used to return after processing .

What is use of nl2br function?

nl2br() inserts a HTML tag <br> before all new line characters \n in a string.
echo nl2br(”god bless \n you”);
output:
god bless<br>
you

What is the use of ob_start?

ob_start is used to initializing the object buffer, so that the whole page will be first parsed (instead of parsing in parts and thrown to browser gradually) and stored in output buffer so that after complete page is executed, it is thrown to the browser once at a time.

What are the MySQL database files stored in system?

Data is stored in name.myd
Table structure is stored in name.frm
Index is stored in name.myi