I want to delete Contact from contact list using PHP SDK.
Hello,
You can pass a contact object through the updateContact() method to update which lists a contact is on. Removing them from all lists is the same as deleting the contact from the website UI: http://constantcontact.github.io/php-sdk/source-class-Ctct.Services.ContactService.html#175-205
If you are looking to remove a large number of contacts from list(s) you can use the activity addRemoveContactsFromListsActivity. http://constantcontact.github.io/php-sdk/source-class-Ctct.Services.ActivityService.html#182-213 -- you can also do this from a file as well: http://constantcontact.github.io/php-sdk/source-class-Ctct.Services.ActivityService.html#215-243
Please have a look and let me know if you have any questions!
Regards,
David Bornstein
Tier II API Support Engineer