PHP5中文手册·Reads bytes from a file descriptor -- 追寻梦想＞编程乐园＞PHP 编程

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	PHP5中文手册 dio_open dio_seek Direct IO PHP Manual dio_read (PHP 4 >= 4.2.0, PHP 5 <= 5.0.5) dio_read — Reads bytes from a file descriptor 说明 string dio_read ( resource `$fd` [, int `$len` ] ) The function dio_read() reads and returns `len` bytes from file with descriptor `fd` . 参数 `fd` The file descriptor returned by dio_open(). `len` The number of bytes to read. If not specified, dio_read() reads 1K sized block. 返回值 The bytes read from `fd` . 参见 dio_write() dio_open dio_seek Direct IO PHP Manual