(PHP 4 >= 4.3.2, PHP 5, PHP 7)

streamWrapper::stream_readRead from stream


public streamWrapper::stream_read ( int $count ) : string

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


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



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

Zwracane wartości

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.


Zgłasza E_WARNING jeśli wywołanie tej metody nie powiedzie się (np. nie jest zaimplementowana).


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



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


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.

Zobacz też:

  • fread() - Odczyt pliku binarnie bezpieczy
  • fgets() - Pobiera linię ze wskaźnika pliku

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