php 한글 메뉴얼 도움말 검색 사이트 Read from stream [streamwrapper.stream-read]

설명

public string streamWrapper::stream_read ( int $count )

This method is called in response to fread() and fgets().

Note:
Remember to update the read/write position of the stream (by the number of bytes that were successfully read).

인수

count: How many bytes of data from the current position should be returned.

반환값

If there are less than count bytes available, return as many as are available. If no more data is available, return either FALSE or an empty string.

오류/예외

이 메쏘드 호출을 실패했을 때 E_WARNING이 발생합니다. (즉, 구현되지 않음)

Note:
If the return value is longer then count an E_WARNING error will be emitted, and excess data will be lost.

주의

Note:
streamWrapper::stream_eof() is called directly after calling streamWrapper::stream_read() to check if EOF has been reached. If not implemented, EOF is assumed.

Warning

When reading the whole file (for example, with file_get_contents()), PHP will call streamWrapper::stream_read() followed by streamWrapper::stream_eof() in a loop but as long as streamWrapper::stream_read() returns a non-empty string, the return value of streamWrapper::stream_eof() is ignored.

참고

fread() - Binary-safe file read
fgets() - Gets line from file pointer