streamWrapper::stream_write()
(PHP 4 >= 4.3.2, PHP 5, PHP 7)
Write to stream
说明
public streamWrapper::stream_write(string $data): int
This method is called in response tofwrite().
Note:Remember to update the current position of the stream by number of bytes that were successfully written.
参数
- $data
Should be stored into the underlying stream.
Note:
If there is not enough room in the underlying stream, store as much as possible.
返回值
Should return the number of bytes that were successfully stored, or 0 if none could be stored.
错误/异常
调用此方法失败将给出E_WARNING
(未实现)。
Note:If the return value is greater the length of$data,
E_WARNING
will be emitted and the return value will truncated to its length.
参见
fwrite()
写入文件(可安全用于二进制文件)