1- Write a PHP program that tests whether an e-mail address is input correctly. Verify that the input begins with a series of characters, followed by the @ character, another series of characters, a period (.) and a final series of characters. Test your program, using both valid and invalid e-mail addresses.
2- Describe how cookies can be used to store information on a computer and how the information can be retrieved by a PHP program. Assume that cookies are not disabled on the client.
Word and PHP files explain this verification program, and how cookies are used to store and retrieve information using PHP.