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dio_seek> <dio_open
Last updated: Fri, 30 Oct 2009

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dio_read

(PHP 4 >= 4.2.0, PHP 5 <= 5.0.5)

dio_read Liest von einem Dateideskriptor

Beschreibung

string dio_read ( resource $fd [, int $len = 1024 ] )

Die Funktion dio_read() liest len Bytes aus der Datei fd .

Parameter-Liste

fd

Ein von dio_open() zurückgegebener Dateideskriptor.

len

Die Anzahl zu lesender Bytes. Wird diese nicht angegeben so wird in 1KB-Blöcken gelesen.

Rückgabewerte

Die vom Deskriptor fd gelesenen Daten.

Siehe auch



add a note add a note User Contributed Notes
dio_read
alban
29-Jun-2009 12:58
I am using dio functions on windows to read RS232 port.
I can read/write but it seems that the write function cannot be binary.

In particular:
dio_write($com1,chr(10),1); will result in writing 2 bytes 0D 0A be cause \n is translated to \r\n. I have not found any way to overcome this limitation so far
matt at vhub dot com
19-May-2006 02:48
Note that dio_read on Windows (other platforms unknown) will not timeout if there is no data to read. There is no way to specify a timeout or do a non-blocking read on Windows.

dio_seek> <dio_open
Last updated: Fri, 30 Oct 2009
 
 
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