What Data Type is Returned From $infusionsoft->contacts()->all();

I am getting mixed answers from internet sources on the data type returned by Infusionsoft (PHP). I thought JSON was being returned, but when I attempt to echo it out, I get an error.

Call:
$json = $infusionsoft->contacts()->all();

Response (from print statement):
[{"email_addresses":[{"email":"john.doe@infusionsoft.com","field":"EMAIL1"}],"email_opted_in":true,"addresses":[{"line1":"123 Sunset Dr","line2":"Suite 204","locality":"Gilbert","region":"AZ","field":"BILLING","postal_code":"85233 - 3404","zip_code":"85233","zip_four":"3404","country_code":"USA"},{"line1":"456 Sunset Dr","line2":null,"locality":"Gilbert","region":"AZ","field":"SHIPPING","postal_code":"85233 - 1245","zip_code":"85233","zip_four":"1245","country_code":"USA"}],"last_updated":"2021-05-17T23:30:00.000+0000","tag_ids":[],"owner_id":null,"date_created":"2021-05-17T23:30:00.000+0000","middle_name":"E.","given_name":"John","ScoreValue":null,"email_status":"SingleOptIn","phone_numbers":[{"number":"(480) 555-1000","extension":null,"field":"PHONE1","type":null},{"number":"(480) 555-1212","extension":null,"field":"PHONE2","type":null}],"last_updated_utc_millis":1621294200203,"company":

Error:
Notice : Undefined property: Infusionsoft\InfusionsoftCollection::$email_addresses in /Applications/MAMP/htdocs/IS/call.php on line 44

I have also attempted using json_decode();

Does anyone have a working example on how to select specific key/pairs from a response here?

Thanks!
-AJ

Hi AJ

Can you please send me the full payload. I can have a look at that

Thanks
Vasanth

@Vasanth_Methkupalli1 Here is the full payload. It’s all dummy data so there are limited records.

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555-1212","extension":null,"field":"PHONE2","type":null}],"last_updated_utc_millis":1621294200203,"company":{"id":26,"company_name":"Infusionsoft"},"id":24,"family_name":"Doe"},{"email_addresses":[{"email":"test04@gmail.com","field":"EMAIL1"}],"email_opted_in":true,"addresses":[{"line1":"126 Sunset Dr","line2":"Suite 207","locality":"Gilbert","region":"AZ","field":"BILLING","postal_code":"85236","zip_code":"85236","zip_four":null,"country_code":null}],"last_updated":"2021-05-17T23:30:00.000+0000","tag_ids":[],"owner_id":null,"date_created":"2021-05-17T23:30:00.000+0000","middle_name":null,"given_name":"FNTest 04","ScoreValue":null,"email_status":"SingleOptIn","phone_numbers":[{"number":"(555) 555-1114","extension":null,"field":"PHONE1","type":null}],"last_updated_utc_millis":1621294200434,"company":{"id":8,"company_name":"Company ABC"},"id":44,"family_name":"LNTest04"},{"email_addresses":[{"email":"test09@gmail.com","field":"EMAIL1"}],"email_opted_in":true,"addresses":[{"line1":"131 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