Send file to the connection.

# Swoole\Server::sendfile

(PECL swoole >= 1.9.0)

Swoole\Server::sendfile — Send file to the connection.

### Description

public Swoole\Server::sendfile(int `$fd`, string `$filename`, int `$offset` = ?): bool

Warning

This function is currently not documented; only its argument list is available.

### Parameters

`fd`

`filename`

`offset`

### Return Values

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