dio_write

Writes data to fd with optional truncation at length (PHP 4 >= 4.2.0, PHP 5 <= 5.0.4)
int dio_write ( resource fd, string data [, int len] )

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.