How to link two Contact

Hello Team,

How to Link two Contact using API. Below is my Code.

$data=$infusionsoft->contacts(‘xml’)->linkContacts($contact1,$contact2,$linkID);

Error:
Fatal error: Uncaught Error: Call to undefined method Infusionsoft\Api\ContactService::linkContacts() in /home/yupitio/public_html/webapi/test.php:11 Stack trace: #0 {main} thrown in /home/yupitio/public_html/webapi/test.php on line 11

Thank You

@Sunny_Gajjar What version of the SDK do you have installed? The linkContacts method was added in the 1.4.3 release.

@MichaelFairchild I have installed the SDK version 1.4