Write a php page that generates the following registration form. Please not the following: 1. The first 4 fields are required. 2. The first and last name fields should only contain letters from "A" to z" and from "a to "z". 3. In the birth date field, the input should adhere to the specified format. 4. The email should be valid 5. Phone number should match the following regular expression: "d{5Adf2J-47)" All these points should be handled using php script. If any of these rules is not met, an error message appears at the bottom of the form, specifying the input error. Otherwise, the system displays "Registered Successfully". Registration Form First Name Last Name Birth Date E-mail Phone Company Country Mailing Address SEND