Bug #35136 [Com]: cute featue
Edit report at https://bugs.php.net/bug.php?id=35136&edit=1
ID: 35136
Comment by: alexeyp0708 at gmail dot com
Reported by: dsp at tdcspace dot dk
Summary: cute featue
Status: Not a bug
Type: Bug
Package: Filesystem function related
Operating System: w98
PHP Version: 4.4.1
Block user comment: N
Private report: N
New Comment:
Minor edits to my previous comment.
eof it the end file byte;
Editing the code
public function isNextEof($res,int $size=1):bool
{
$tell=ftell($res);
//$check=fread($res,$size);
fseek($res,$size-1,SEEK_CUR);
$check=fgetc($res);
$eof=feof($res);
fseek($res,$tell);
return $eof;
}
Previous Comments:
------------------------------------------------------------------------
[2021-11-21 03:10:02] alexeyp0708 at gmail dot com
Some people don't understand how eof works.
eof is the end of file (stream) byte.
To understand that the end of the file (stream) has been reached while reading, this byte must be
read (fread ($ res, 1); or fgetc ($ res));
Even when you move the pointer with fseek ($ res, $ offset), you won't determine
the end of the file until you read the eof byte.
public function isNextEof($res,int $size=1):bool
{
$tell=ftell($res);
$check=$this->fread($res,$size);
$eof=feof($res);
fseek($res,$tell);
return $eof;
}
Be sure to ask the error to find out why file functions return false or empty strings.
https://www.php.net/manual/en/function.socket-last-error.php
https://www.php.net/manual/en/function.error-get-last.php
Please place this text in coments
https://www.php.net/manual/en/function.feof.php
(in my case, the provider's IP is for some reason in the black list)
------------------------------------------------------------------------
[2021-06-22 06:13:36] ask dot question at wp dot pl
For me, the feof() also works badly.
while($max && !feof($src))
{
$l=$max>0x100000 ? 0x100000 : $max;
$s=fread($src,$l);
if($s===false || $s==='') return 1;
if(fwrite($dst,$s)!==strlen($s)) return 2;
if(strlen($s)!==$l) break;
$max-=$l;
}
In this code the "$str===false || $str===''" should be not reachable without
file problem but it is reachable on Linux. WHY???
If the function (feof) works correctly (IMO it doesn't work correctly due to manual definition)
- HOW TO CHECK WHY I CANNOT READ FILE? Because of permisions, or file delete OR real end of file?
PHP 7.4, Linux. I believe there is real problem in feof implementation in PHP.
------------------------------------------------------------------------
[2005-11-07 15:28:09] sniper@php.net
Sorry, but your problem does not imply a bug in PHP itself. For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system
is not the
appropriate forum for asking support questions. Due to the volume
of reports we can not explain in detail here why your report is not
a bug. The support channels will be able to provide an explanation
for you.
Thank you for your interest in PHP.
------------------------------------------------------------------------
[2005-11-07 10:38:04] dsp at tdcspace dot dk
Description:
------------
I really thought that the feof() was TRUE when the logical file pointer is a EOF.
but no !
we need to do fread() and get an empty record before the feof() reports TRUE.
sunday is the last day in a week and thus end-of-week - and so is the last byte a the file is also
EOF.
but the way feof() works - is says - it must wait until monday - before it can find out !
Reproduce code:
---------------
// open and read binary file with 128 byte records
$h = fopen("phpbugs.dat", "rb");
while(!feof($h)) {
$rec = fread($h, 128);
if ($strlen($rec) == 0) break; // should not be needed
}
close($h);
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=35136&edit=1
Thread (5 messages)