fwrite() writes the contents of
string to the file stream
pointed to by handle. If
the length argument is
given, writing will stop after
length bytes have been written or the end of string is reached, whichever
comes first.
fwrite() returns the number of
bytes written, or FALSE on
error.
Note that if the
length argument is given, then the
magic_quotes_runtime configuration option will be ignored
and no slashes will be stripped from
string.
注: On systems which differentiate between binary and text files (i.e. Windows) the file must be opened with 'b' included in fopen() mode parameter.
See also fread(), fopen(),
fsockopen(), popen(), and
fputs().