The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
YAR_VERSION
(string) YAR_CLIENT_PROTOCOL_HTTP
(int) YAR_OPT_PACKAGER
(int) YAR_OPT_TIMEOUT
(int) YAR_OPT_CONNECT_TIMEOUT
(int) YAR_OPT_HEADER
(array) YAR_PACKAGER_PHP
(string) YAR_PACKAGER_JSON
(string) YAR_ERR_OKEY
(int) YAR_ERR_OUTPUT
(int) YAR_ERR_TRANSPORT
(int) YAR_ERR_REQUEST
(int) YAR_ERR_PROTOCOL
(int) YAR_ERR_PACKAGER
(int) YAR_ERR_EXCEPTION
(int)