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Re: Magic quotes? Should I still be cautious? [message #176382 is a reply to message #176379]

Thu, 29 December 2011 22:22

Thomas Mlynarczyk
Messages: 131
Registered: September 2010

Karma:

Senior Member

Michael Fesser schrieb:
> Check if magic quotes are enabled and use stripslashes() if they
> are to get the raw data.

There is also the sybase version of magic quotes which would require a
different kind of treatment. And if the data is an array you have to do
the keys as well, but only on the first level for a multidimensional
array if I remember right and -- well, all this is definitely way too
much trouble.

I prefer using the filter functions (http://de3.php.net/filter). They
allow to access the raw input data and thus to completely bypass any
magic quoting (as well as any modifications of the $_GET etc. arrays
done by the script):

/**
* Read a GPC value.
*
* @param string Name
* @return string|array|null Value or null
*/
function input( $name )
{
$name = str_replace( '.', '_', $name );
foreach ( array( INPUT_GET, INPUT_POST, INPUT_COOKIE ) as $source ):
$value = filter_input( $source, $name, FILTER_UNSAFE_RAW );
if ( $value === false ):
$value = filter_input( $source, $name,
FILTER_UNSAFE_RAW, FILTER_REQUIRE_ARRAY );
endif;
if ( $value !== null and $value !== false ):
return $value;
endif;
endforeach;
}

The above function can be modified to accept an explicit $source as
second argument and do away with the foreach. The first line addresses
the fact that PHP silently converts any dot in a variable name to an
underscore. My function allows using the "dotted" name. Once the value
is retrieved, it must, of course, be properly validated. Although the
filter functions provide such functionality, I prefer to do my own
validation.

Greetings,
Thomas

--
Ce n'est pas parce qu'ils sont nombreux à avoir tort qu'ils ont raison!
(Coluche)

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[Message index]

		Magic quotes? Should I still be cautious? By: Michael Joel on Thu, 29 December 2011 20:55
		Re: Magic quotes? Should I still be cautious? By: Michael Fesser on Thu, 29 December 2011 21:04
		Re: Magic quotes? Should I still be cautious? By: Michael Joel on Thu, 29 December 2011 21:53
		Re: Magic quotes? Should I still be cautious? By: Michael Joel on Thu, 29 December 2011 22:08
		Re: Magic quotes? Should I still be cautious? By: Thomas Mlynarczyk on Thu, 29 December 2011 22:22
		Re: Magic quotes? Should I still be cautious? By: Peter H. Coffin on Thu, 29 December 2011 23:53
		Re: Magic quotes? Should I still be cautious? By: Michael Joel on Fri, 30 December 2011 04:32
		Re: Magic quotes? Should I still be cautious? By: Erwin Moller on Fri, 30 December 2011 11:38
		Re: Magic quotes? Should I still be cautious? By: Michael Joel on Fri, 30 December 2011 14:52
		Re: Magic quotes? Should I still be cautious? By: Erwin Moller on Mon, 02 January 2012 14:02
		Re: Magic quotes? Should I still be cautious? By: Michael Fesser on Fri, 30 December 2011 12:18
		Re: Magic quotes? Should I still be cautious? By: alvaro.NOSPAMTHANX on Fri, 30 December 2011 09:26
		Re: Magic quotes? Should I still be cautious? By: Erwin Moller on Fri, 30 December 2011 13:42
		Re: Magic quotes? Should I still be cautious? By: Michael Joel on Fri, 30 December 2011 14:52
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Wed, 04 January 2012 14:55
		Re: Magic quotes? Should I still be cautious? By: Erwin Moller on Thu, 05 January 2012 13:08
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Thu, 05 January 2012 13:22
		Re: Magic quotes? Should I still be cautious? By: The Natural Philosoph on Thu, 05 January 2012 13:36
		Re: Magic quotes? Should I still be cautious? By: Erwin Moller on Thu, 05 January 2012 14:20
		Re: Magic quotes? Should I still be cautious? By: The Natural Philosoph on Thu, 05 January 2012 15:49
		Re: Magic quotes? Should I still be cautious? By: Erwin Moller on Thu, 05 January 2012 13:39
		Re: Magic quotes? Should I still be cautious? By: M. Strobel on Thu, 05 January 2012 23:28
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Fri, 06 January 2012 00:36
		Re: Magic quotes? Should I still be cautious? By: Erwin Moller on Fri, 06 January 2012 10:16
		Re: Magic quotes? Should I still be cautious? By: Thomas Mlynarczyk on Fri, 06 January 2012 11:05
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Fri, 06 January 2012 13:32
		Re: Magic quotes? Should I still be cautious? By: M. Strobel on Fri, 06 January 2012 17:18
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Fri, 06 January 2012 18:04
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Sun, 08 January 2012 19:48
		Re: Magic quotes? Should I still be cautious? By: Thomas Mlynarczyk on Fri, 06 January 2012 19:14
		Re: Magic quotes? Should I still be cautious? By: M. Strobel on Fri, 06 January 2012 19:24
		Re: Magic quotes? Should I still be cautious? By: The Natural Philosoph on Fri, 06 January 2012 19:34
		Re: Magic quotes? Should I still be cautious? By: M. Strobel on Fri, 06 January 2012 20:11
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Fri, 06 January 2012 23:12
		Re: Magic quotes? Should I still be cautious? By: Thomas Mlynarczyk on Sat, 07 January 2012 16:59
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Sat, 07 January 2012 20:54
		Re: Magic quotes? Should I still be cautious? By: Thomas Mlynarczyk on Sun, 08 January 2012 01:13
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Sun, 08 January 2012 01:33
		Re: Magic quotes? Should I still be cautious? By: Thomas Mlynarczyk on Sun, 08 January 2012 23:21
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Mon, 09 January 2012 00:05
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Sun, 08 January 2012 19:52
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Sun, 08 January 2012 20:59
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Wed, 11 January 2012 10:00
		Re: Magic quotes? Should I still be cautious? By: The Natural Philosoph on Wed, 11 January 2012 11:53
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Wed, 11 January 2012 13:45
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Wed, 11 January 2012 14:43
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Wed, 11 January 2012 13:44
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Wed, 11 January 2012 14:47
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Wed, 11 January 2012 14:51
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Wed, 11 January 2012 17:09
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Wed, 11 January 2012 19:01
		Re: Magic quotes? Should I still be cautious? By: Arno Welzel on Thu, 12 January 2012 07:58
		Re: Magic quotes? Should I still be cautious? By: M. Strobel on Fri, 06 January 2012 16:41
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Fri, 06 January 2012 18:05
		Re: Magic quotes? Should I still be cautious? By: Erwin Moller on Fri, 06 January 2012 10:07
		Re: Magic quotes? Should I still be cautious? By: M. Strobel on Fri, 06 January 2012 17:05
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Fri, 06 January 2012 18:07
		Re: Magic quotes? Should I still be cautious? By: M. Strobel on Fri, 06 January 2012 18:45
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Fri, 06 January 2012 23:09
		Re: Magic quotes? Should I still be cautious? By: Thomas Mlynarczyk on Sat, 07 January 2012 17:08
		Re: Magic quotes? Should I still be cautious? By: Jerry Stuckle on Sat, 07 January 2012 20:59

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