On 4/1/07, Richard Lynch <[EMAIL PROTECTED]> wrote:
So, after a recent thread on data filtering, I'm wondering...
Is this "good enough" in ALL possible Unicode/charset situations:
$foo_id = (int) $_POST['foo_id'];
$query = "insert into whatever(foo_id) values($foo_id)";
Or is it possible, even theoretically possible, for a sequence of:
[-]?[0-9]+
to somehow run afoul of ANY charset?
Perhaps more interesting, how about this:
$foo = (float) $_POST['foo'];
Is there any way for any PHP output from (float), even with decimal
overflow/underflow in various databases, for that to "go wrong"?
Should one be ultra-conservative and just do:
$foo_sql = mysql_real_escape_string($connection);
or is that just being silly?
This oen is better i believe, but you probably don't want to unescape
the connection :)
use this instead:
$foo_sql = mysql_real_escape_string($foo_sql,$connection);
Tijnema
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