There was an issue in code generation for PHP SDKs where the model classes (custom types) had fields with incorrect
PHP typehints. This lead to the
JsonMapper mapping responses incorrectly to models during deserialization. However, this
only occurred when a model had fields that were described as optional in the API description and no default value was provided.
Re-generate your PHP SDK to get the fix.
In cases where model fields were optional, the PHP typehints being added did not allow for a
null value. For example, an optional
integer value should have a
integer|null typehint but was incorrectly given just
integer. This caused the
incorrectly initialize the field to a non-zero value, like
0, when the response did not contain the field or the field was
This fix will allow
null to be correctly mapped on to the field.
This issue was specific to code generation for PHP SDKs.