PHP Manual
Direct IO 函数
Writes data to fd with optional truncation at length

dio_write

(PHP 4 >= 4.2.0, PHP 5 < 5.1.0)

dio_write — Writes data to fd with optional truncation at length

说明

dio_write ( resource $fd , string $data [, int $len = 0 ] ) : int

dio_write() writes up to len bytes from data to file fd.

参数

fd: The file descriptor returned by dio_open().
data: The written data.
len: The length of data to write in bytes. If not specified, the function writes all the data to the specified file.

返回值

Returns the number of bytes written to fd.

参见

dio_read() - Reads bytes from a file descriptor

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