# 预定义常量

下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

`GEOIP_COUNTRY_EDITION` (int)
`GEOIP_REGION_EDITION_REV0` (int)
`GEOIP_CITY_EDITION_REV0` (int)
`GEOIP_ORG_EDITION` (int)
`GEOIP_ISP_EDITION` (int)
`GEOIP_CITY_EDITION_REV1` (int)
`GEOIP_REGION_EDITION_REV1` (int)
`GEOIP_PROXY_EDITION` (int)
`GEOIP_ASNUM_EDITION` (int)
`GEOIP_NETSPEED_EDITION` (int)
`GEOIP_DOMAIN_EDITION` (int)

以下常量是用来表示网速的:

`GEOIP_UNKNOWN_SPEED` (int)
`GEOIP_DIALUP_SPEED` (int)
`GEOIP_CABLEDSL_SPEED` (int)
`GEOIP_CORPORATE_SPEED` (int)

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