file_exists, is_readable & effective UID/GID

4 Message(s) by 3 Author(s) originally posted in php general

From: manuel.vacelet

Date: Wednesday, October 24, 2007

Hi all,

file

<file system> An element of data storage in a {file system}.

	The history of computing is rich in varied kinds of files and
	{file systems}, whether ornate (e.g., {Macintosh file system}
	for a well-known case) or deficient (e.g., many simple
	pre-1980s file systems don't allow {directories}).

	However, the prototypical file has these characteristics:

	* It is a single sequence of bytes (but consider {Macintosh}
	{resource forks}).

	* It has a finite length, unlike, e.g. a {Unix} {device}.

	* It is stored in a {non-volatile storage} medium (but see
	{ramdrive}).

	* It exists (nominally) in a {directory}.

	* It has a name that it can be referred to by in file
	operations, possibly in combination with its {path}.

	Additionally, a file system may associate other information
	with a file, such as {permission} bits or other {file
	attributes}; timestamps for file creation, last revision, and
	last access; revision numbers (a` la VMS), and other kinds of
	{magic}.

	Compare: {document}.

	(1997-04-08)

_exists and is_readable perfom there test with real

1. Not simulated.  Often used as a specific antonym to
	{virtual} in any of its jargon senses.

	2. <mathematics> {real number}.

	[{Jargon File}]

	(1997-03-12)

UID/GID.
Is there any functions that tests file existance with effective UID/GID ?

Note: stat isn't an option

<software> (Or "option", "flag", "switch", "option switch") An
	argument to a command that modifies its function rather than
	providing data.  Options generally start with "-" in {Unix} or
	"/" in {MS-DOS}.  This is usually followed by a single letter
	or occasionally a digit.

	Some commands require each option to be a separate argument,
	introduced by a new "-" or "/", others allow multiple option
	letters to be concatenated into a single argument with a
	single "-" or "/", e.g. "ls -al".  A few Unix commands
	(e.g. {ar}, {tar}) allow the "-" to be omitted.  Some options
	may or must be followed by a value, e.g. "cc prog.c -o prog",
	sometimes with and sometimes without an intervening space.

	{getopt} and {getopts} are commands for parsing command line
	options.  There is also a {C} library routine called getopt
	for the same purpose.

	(1996-12-11)

because it raises an E_WARNING if the file
isn't readable.

Thanks,
Manuel

From: parasane

Date: Wednesday, October 24, 2007

wrote in message:

Hi all,
file_exists and is_readable perfom there test with real UID/GID.
Is there any functions that tests file existance with effective UID/GID ?
Note: stat isn't an option because it raises an E_WARNING if the file
isn't readable.
Thanks,
Manuel
--
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That's what you've things like <? ini_set("display_errors", "off"); ?>

--
Daniel P. Brown
[office] (570-) 587-7080 Ext. 272
[mobile] (570-) 766-8107

Give a man a fish, he will eat for a day. Then you will find out he was
allergic and is hospitalized. See? No good deed goes unpunished....

From: lists

Date: Wednesday, October 24, 2007

wrote in message:
wrote in message:
Hi all,

file_exists and is_readable perfom there test with real UID/GID.
Is there any functions that tests file existance with effective UID/GID ?

Note: stat isn't an option because it raises an E_WARNING if the file
isn't readable.

Thanks,
Manuel

--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

That's what you've things like <? ini_set("display_errors", "off"); ?>

what about doing it like this?

<?php

$filename = __FILE__;

$stat_info = @xxxxxxxxxxx($filename);

if ( $stat_info ) {
// do something...
}

The '@xxxxxxxxxxx' will suppress the E_WARNING notice
if stat fails the condition will fail.

--
Jim Lucas

"Some men are born to greatness, some achieve greatness,
and some have greatness thrust upon them."

Twelfth Night, Act II, Scene V
by William Shakespeare

From: manuel.vacelet

Date: Thursday, October 25, 2007

wrote in message:
wrote in message:
wrote in message:
Hi all,
file_exists and is_readable perfom there test with real UID/GID.
Is there any functions that tests file existance with effective UID/GID ?
Note: stat isn't an option because it raises an E_WARNING if the file
isn't readable.
Thanks,
Manuel
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
>
> That's what you've things like <? ini_set("display_errors", "off"); ?>
>
what about doing it like this?
<?php
$filename = __FILE__;
$stat_info = @xxxxxxxxxxx($filename);
if ( $stat_info ) {
// do something...
}
The '@xxxxxxxxxxx' will suppress the E_WARNING notice
if stat fails the condition will fail.

I much prefer the second solution

<jargon> A {marketroid} term for something he wants to sell
	you without bothering you with the often dizzying distinctions
	between {hardware}, {software}, {services}, {applications},
	{file formats}, companies, brand names and {operating
	systems}.

	"{Flash} is a perfect image-streaming solution."  "What is
	it?"  "Um...  about a thousand dollars."

	See also: {technology}.

	(1998-07-07)

(Jim's one) even if I find that php
limitation amazing !

Thank you for your help.
Cheers,
Manuel

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