search / results

I've created a dynamic page using PHP. Is there a way to have this page
contain both the search and results parts of a database query?

Secondly, is there a way to instead of displaying the records from the
database, it displays a message (for example, if the data entered in the form
field is found in the database the results displays, " <entry from form field>
was found in our database" and if the entry was not found display, "<entry from
form field> was not found in our database"

Thank you for your help.