Returns whether or not each pair of specified users is friends with each other. The first array specifies one half of each pair, the second array the other half; therefore, they must be of equal size.
| Type | Name | Required | Description |
|---|---|---|---|
| string | api_key | ✔ | The application key associated with the calling application. |
| string | session_key | ✔ | The session key of the logged in user. |
| float | call_id | ✔ | The request's sequence number. Each successive call for any session must use a sequence number greater than the last. We suggest using the current time in milliseconds, such as PHP's microtime(true) function. |
| string | sig | ✔ | An MD5 hash of the current request and your secret key, as described in the authentication guide. |
| string | v | ✔ | This must be set to 1.0 to use this version of the API. |
| string | format | Desired response format. Either XML (default) or JSON. | |
| string | callback | Name of a function to call. This is primarily to enable cross-domain JavaScript requests using the <script> tag, also known as JSONP, and works with both the XML and JSON formats. The function will be called with the response passed as the parameter. | |
| array | uids1 | ✔ | A list of user ids matched with uids2. This is a comma-separated list of user ids. |
| array | uids2 | ✔ | A list of user ids matched with uids1. This is a comma-separated list of user ids. |