feof
Just a note that fflush takes care of the cache already, at least on my server. Using clearstatcache before reading a previously written file also worked, but lagged the output time much more noticeably (by two or three seconds), probably due to excess cache erasing beyond files.
fflush
(PHP 4 >= 4.0.1, PHP 5)
fflush — Flushes the output to a file
Descrierea
bool fflush
( resource $handle
)
This function forces a write of all buffered output to the resource pointed to by the file handle .
Parametri
- handle
-
Indicatorul fişierului trebuie să fie valid şi trebuie să indice la un fişier deschis cu succes cu ajutorul fopen() sau fsockopen() (şi să nu fie închis cu fclose()).
Valorile întroarse
Întoarce valoarea TRUE în cazul succesului sau FALSE în cazul eşecului.
add a note
User Contributed Notesfflush
oryan at zareste dot com
30-Oct-2005 04:48
30-Oct-2005 04:48
jzho327 at cse dot unsw dot edu dot au
27-Jan-2003 12:27
27-Jan-2003 12:27
Sorry, the note I previously added regarding fflush() has a bug!
when you read file by calling
$fp = fopen("myfile", "a+");
and you wish to read the content, you have to call
rewind($fp) before you attemp to read it. (Silly me) Or else if you tried something like
$fp = fopen("myfile", "a+");
$content = fread($fp);
// show that content is in fact null
if ($content == NULL)
print "but it must be first put to rewind<br>\n";
will result
but it must be first put to rewind.
[new line]
in fact, if you are not careful (like me), and you opened it with
$fp = fopen("myfile", "r+");
$content = fread($fp);
..
// do something with content
..
then you tried to again
$content = fread($fp);
without rewind, you'd get NULL again. This sounds trivial, but if you work with several file resources, with freads and fopens everywhere, you can get easily lost. So becareful.