What is the PHP equivalent to this code?

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LinkOperation linkOp = new LinkOperation();
ManagedCustomerLink link = new ManagedCustomerLink();
link.setClientCustomerId(CLIENT_CID);
link.setLinkStatus(LinkStatus.PENDING);
link.setManagerCustomerId(MANAGER_CID);
linkOp.setOperand(link);
linkOp.setOperator(Operator.ADD);
managedCustomerService.mutateLink(new LinkOperation[]{linkOp});