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Add / Update Multiple contacts to constant contact


Add / Update Multiple contacts to constant contact



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.


This is my problem too, please help

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