Add / Update Multiple contacts to constant contact

[anjug2]

Hi,

My requirement is to add 500 contacts at a time. This 500 contacts fetching from my Database and store it to an array. I need to import this array of contacts to constant contact using PHP. I am using the V2 API method. Could you please provide any sample code to insert 500 contacts at a time. 

Note: If the contact email already exists update the contact.

Thank you.

[zanam6]

This is my problem too, please help