E_ERROR with a user defined
function using set_error_handler() I can't see anyway to accomplish
this in the current implementation?
What is wrong with __call() ?
See:
http://www.php.net/manual/en/language.oop5.overloading.php
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(eg string - integer) when the
function is called; it then need not be converted again when it is used in
the function. This will presumably be a win if the value is used more than once.
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);// Perform check and then silent juggle
$total = SumToN(10); // Perform check but juggle not needed
$total = SumToN(ten); // Perform check and emit an error (somehow)
The error is better emitted at the point of function call rather than having
to put a check within SumToN()
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On Thu, Jan 03, 2008 at 07:36:48PM +0100, Markus Fischer wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hello,
Alain Williams wrote:
On Thu, Jan 03, 2008 at 12:21:21PM -0500, Sam Barrow wrote:
I think E_WARNING would be appropriate. That's what happens when you
omit an argument
will still happen.
What you are doing to allowing the function author to protect the integrity
of his code without having to resort to a regex/... to check what the arguments
are.
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(presumably as a number)
then the type juggle 'string of digits - number' will not need to be done
since it was done on function entry.
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is NOT to save input ($_GET, etc) validation -- that will
still need to be done; the point is to help pick up programming errors
where you accidentally get the type wrong.
Granted: some idiots will use it as cheap input validation, but it is difficult
to help some people.
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a defined capitalisation.
Just an off the wall thought ... if the type is not a known scalar type or
class, then check to see if the
word is a constant ... could be interesting aka C's typedefs.
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Leveraging the buying power of the masses!
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is that the programmer will pass an int/float/string/...
rather than the wrong resource type. 'resource' will still be very useful
and catch many errors without being 100% perfect.
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this means is that the function is written in the assumption
that $_REQUEST['age'] has been checked for numeric before the function
is called.
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will be performed)
OK
And well... This thread continues without a single valid (!= personal
opinion) reason why type hinting should NOT be introduced. BTW accepting
the string '1' where an (int) type hint is placed would be the next
stupid design decision.
Why ?
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3.7645990848541
There is thus considerable advantage on doing the type juggling as part of the
type hinting on function call.
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is still allowed, so
PDO returning results as strings
is quite OK as long as what is defined to be numeric *really* has a VALUE that
is a number.
OK: the above does not apply with some things like resources since you can't
convert them to/from a string
in a meaninful way.
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On Sun, Jan 06, 2008 at 12:51:20PM +0100, Kore Nordmann wrote:
Am Sonntag, den 06.01.2008, 11:28 + schrieb Alain Williams:
PLEASE READ CAREFULLY
You have NOT understood what type hinting is about.
You are confusing the TYPE and the VALUE.
What type hinting means
we continue going round in circles.
Stefan Esser
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+1
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#include
and prob
do something stupid like putting a zero in some database column, or worse.
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is propagated via
_GET/_POST. However: I am quite willing to accept the argument that the trivial
amount of extra code to do this properly is the 'right' solution.
What Stefan is saying ought to be listed with the security issues on the PHP
web site.
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But you are assuming that you can identify the 'right' places to put the
checks ... not always easy, especially in code that changes.
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it.
An:
assert (is_int($x))
followed by:
$x = (int)$x
is the way to go.
This only serves to include an additional type juggling system into php,
which is very confusing.
If you don't understand it: don't use it.
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possible?
What I'm trying to acheive is this:
function a($arg1, $arg2) return int {
}
Currently:
function a return int($arg1, $arg2) {
}
Why note the following (which would be more C like):
function return int a($arg1, $arg2) {
}
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() {
global $aa;
echo in b aa=$aa\n;
}
b();
}
a('this is aa');
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him for his hard
work.
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On Wed, Apr 30, 2008 at 10:42:04PM +0200, Keryx Web wrote:
Alain Williams skrev:
Taking it a bit further, if the function returns a reference (eg to its
argument):
function int myfunction(int $param)
Alternative could be:
function int myfunction(int $param)
But I think
think that it realy helps since the naive programmer isn't
going to have a clue about choosing a good value for EPSILON.
Best leave it the way that it is.
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to
be
money::plus()
Would this fit well with the PHP type juggling.
Why not use the BC Math Functions ?
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compile
their classes together for performance, they will never be able to switch to,
or support namespaces).
...
To which I would add: namespaces are not for variables, this I would like to
see.
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that to be a call to a function named
'funref'.
So you need to change the syntax to, perhaps, something like C:
(funref)()
I can't see people understanding that.
Stick with what we have.
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do like the idea of replacing dollar with euro :-)
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of variables in namespace foo:.:bar.
Maybe $_NAMESPACES would be an array of all namespaces that are defined.
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:
use strict;
use IO::File
Nobody is made to do anything, however you loose the option to complain if your
namespace starts with a lower case character.
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(think: $_GET). (3) also has the virtue that system things tend to start
with an underscore.
This scheme is nice and simple.
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documentation of this - I am not
talking about PHP documentation here by W3 other places :-(
+1 to type hinting.
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the current PHP manual that refers to it as type hinting:
http://www.php.net/manual/en/language.oop5.typehinting.php
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functions
library, as well as the common behavior of PHP. It doesn't come to
say that it's not useful in some cases - but for these, using is_*()
should be a suitable.
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throwing the idea in the wild since I am not able to assess if
that's doable, but it might be a good idea to add it as soon as
possible if it is, especially if we want to skip a 5.4
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);
}
...
}
3) function Foo(is_int($x)) {
Function is_int is called, an error is raised if it returns false.
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weak and strict, numeric and scalar type hiting seems to be a
very good middle point.
+1 for Strict type hiting. (weak type hiting very similar to no type
hiting).
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$length) { ... }
I suspect that it makes things too complicated.
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On Fri, Jul 10, 2009 at 10:57:22AM -0400, Alban wrote:
Le Fri, 10 Jul 2009 14:23:24 +0100, Alain Williams a écrit :
On Fri, Jul 10, 2009 at 08:45:55AM -0400, Alban wrote:
Hello all,
I don't understand why you focus on Strict / Weak question.
It is really about:
* type
On Fri, Jul 10, 2009 at 11:50:04AM -0400, Alban wrote:
Le Fri, 10 Jul 2009 16:16:51 +0100, Alain Williams a écrit :
The GET argument, yes, should be an integer, but it's possible is not !
In this, actually i always use this syntaxe :
is_child(intval($_GET['age']));
or
is_child( (int
be good for things like generating
a WSDL file... which currently works by parsing pseudo comments in the source.
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quickly and
openly they address bugs. We will still accept you back when you become
disillusioned.
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of work, but is only done if the application *really*
wants/needs to know.
What the function might return could be an array, where different elements
contain different levels
of details - including the OS specific stuff (some people are not bothered by
portablity).
I don't know.
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?
Yes -- many people do not understand OOP.
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Past
than not PHP is not the bottleneck of your
program and thus optimization wont get you too much.
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On Wed, Jan 13, 2010 at 07:48:17AM -0800, Rasmus Lerdorf wrote:
Alain Williams wrote:
Unfortunately: APC does not work with PHP 5.3 -- I have a site where I would
love to use it but I cannot. I use APC to great effect elsewhere.
The svn version works ok with 5.3. Turn off gc though. You
the argument that things like this will confuse novice programmers,
maybe: but would they ever try to type something like that ?
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()-ork()-ah()-ah() you don't have stray/unwanted
variables hanging round to confuse (or be misused) later.
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);
this could be simplified to:
$employees-findEmployee('John Smith')-increaseSalary(1000);
This is the sort of reason why chaining is useful. It is also, IMHO,
quite readable.
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+44 (0
that the [] is easier/quicker to read than array(), but is it
really worth it ... too many syntaxes for the same thing ?
Anyway: it makes php look like perl -- and that would never do :-)
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On Tue, Feb 06, 2007 at 04:16:28PM +0100, Christian Schneider wrote:
Alain Williams wrote:
Anyway: it makes php look like perl -- and that would never do :-)
Can we please stop that FUD? (even if it is meant as a joke)
No: it was NOT a serious point. What is wrong with the occasional grin
could would be needed.
intelligent people of this mailing list beat me down, if the case is
that I'm wrong.
Before thinking about this: try to demonstrate how much we would gain
on typical web sites.
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are
allowed)!
+1
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#include std_disclaimer.h
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.
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#include std_disclaimer.h
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start.
http://upload.wikimedia.org/wikipedia/commons/3/3d/Timezones_optimized.png
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and to PHP4 I say So long and thanks
for all the fish!!!
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?
The trouble is that many PHP scripts dynamically include other files
and variables being dynamically typed ... you really need to run the
script to see what happens.
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that may arise.
Security-only releases will also terminate on 2008-08-08.
We strongly recommend upgrading your applications to PHP 5.
/p
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variable/function/... names.
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On Tue, Aug 21, 2007 at 04:26:21PM +0100, Stut wrote:
As far as I was aware addslashes is inadequate for this purpose. Should
this not point people to use database-specific escaping functions rather
than addslashes?
Yes, even better use placeholders (if the DB API supports it).
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that the returned string is stored in should be.
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#include
system.
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#include std_disclaimer.h
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and arrays can
already have trailing commands
Also: many other languages (eg C, Perl) allow a trailing comma in arrays, but
not to function arguments. This change would make PHP different from what many
programmers might expect.
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, I do agree that it might be a bit confusing.
What is disappointing is that I cannot go:
($f = new Foo)-bar();
That does not suffer from a lack of clarity on intent.
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slow compared to an if/else when the operand is an array for example:
Is that why the following does not work as I expected:
$dbh = $how == 'r' ? ($dbh_r) : ($dbh_w);
$dbh is NOT a reference to $dbh_r or $dbh_w.
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On Tue, Oct 18, 2011 at 10:09:37PM +0200, Arnaud Le Blanc wrote:
Hi,
Le Monday 17 October 2011 15:07:30, Alain Williams a écrit :
On Fri, Oct 14, 2011 at 08:08:56PM +0200, Arnaud Le Blanc wrote:
Hi,
I've already posted this patch and it has since been reviewed and
improved. I'm
the
compiler
complain if it sees a variable that has not been declared.
In a large program the occasional typeo on variable names does happen, catching
them
with 'use strict' is great!
I have proposed this before and people did not like it. Here is to hopeing for a
different sentiment.
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allowing the class users to not be strict.
Just because Java has a feature that you appear to not like, does not mean that
others might not want it in some circumstances.
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asking to make type hinting for variable declaration an
available option.
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checking completely if it
knows everywhere a function (probably a class method) can be called from and
knows
the types of the arguments that are passed in to it.
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too complicated.
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#include std_disclaimer.h
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(compiler) but also with programmers who subsequently read the code.
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sources has NOT been
correctly filtered -- but that should be a rare event and indicative of a bug.
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like this numbers should start +
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#include
that the parser would start
out in PHP mode.
would you please leave this world in peace?
...
You may not agree with his proposal (neither do I) but please remain kind
polite to him. He is not trolling.
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Hi,
just trying to canvass support for the ability to enforce declaration of
variables as with perl's use strict:
http://bugs.php.net/bug.php?id=39091
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+44
, it won't pick up the following:
$fo0 = 'bill';
...
$foo = 'ben';
One is a typeo.
On 10-Oct-06, at 2:52 PM, Alain Williams wrote:
http://bugs.php.net/bug.php?id=39091
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] http://www.martinfowler.com/bliki/FluentInterface.html
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#include std_disclaimer.h
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in which values from forms are frequently trusted without checks.
Php is easy to write, that is good. Unfortunately this also means that
bad/simple/careless programmers can use php ... these are the ones who
cause many of the php script errors that cause problems.
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consequences are hard to predict without sample code.
It is OFF by default.
RegisterGlobals was initially ON by detault since loosing it broke
a lot of code. PHP survived that.
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a
great car mechanic.
Your reply is completely out of tune with Wietse's comment.
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#include std_disclaimer.h
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filtering, there's certainly a way to warn
a user that does it by mistake. That's the target.
Very well put/explained.
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This has just appeared:
http://www.theregister.co.uk/2007/01/11/php_apps_security/
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On Thu, Jan 11, 2007 at 08:06:16AM -0800, Rasmus Lerdorf wrote:
Alain Williams wrote:
On Thu, Jan 11, 2007 at 07:43:21AM -0800, Rasmus Lerdorf wrote:
Alain Williams wrote:
This has just appeared:
http://www.theregister.co.uk/2007/01/11/php_apps_security/
There are some concrete
be looking to help those people - there are more of them than they are of us.
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On Thu, Jan 11, 2007 at 05:38:58PM +0100, Christian Schneider wrote:
Alain Williams wrote:
One problem that I see persistently have is forgetting to declare variable
'global'
in a function ... you only find out that something is wrong when the program
misbehaves. Forcing variable
On Thu, Jan 11, 2007 at 12:05:45PM -0500, Ilia Alshanetsky wrote:
On 11-Jan-07, at 9:41 AM, Alain Williams wrote:
This has just appeared:
http://www.theregister.co.uk/2007/01/11/php_apps_security/
Of many people who use PHP not many have strong programming
background and even
On Thu, Jan 11, 2007 at 12:26:17PM -0500, Ilia Alshanetsky wrote:
On 11-Jan-07, at 12:11 PM, Alain Williams wrote:
The discussion is how PHP can help them to discover problems in their
scripts. This is what led to Wietse Venema's suggestion about tainting
a few weeks ago. These may be things
near this mail list.
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#include std_disclaimer.h
--
PHP
?
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Alain Williams
Linux Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer.
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#include std_disclaimer.h
--
PHP Internals - PHP Runtime
plug 90% of holes and then leave the rest for
leisure... Effective fix means fixing all problems, not just 90% of it.
The choice appears to be:
1) Fix for 90% of compromises, wait forever for fix for the last 10%
2) Wait forever for fix for 100% of compromises
I vote (1).
--
Alain Williams
what happened with the Debian firefox/iceweasle debacle.
-Rasmus
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Alain Williams
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\fred that cannot be accessed by code
outside the namespace
Variables in a namespace would not appear in $GLOBALS.
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Alain Williams
Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT
Lecturer.
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Parliament Hill Computers Ltd
.
--
Alain Williams
Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT
Lecturer.
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#include
On Wed, Feb 24, 2010 at 09:51:45AM +0100, Ferenc Kovacs wrote:
maybe you want to pack your namespaced functions/classes with the
global variables used with them.
+1
Tyrael
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Alain Williams
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On Wed, Feb 24, 2010 at 02:20:38PM +0300, Alexey Zakhlestin wrote:
On 24.02.2010, at 13:28, Alain Williams wrote:
Objects are not always the answer.
in situation, which you described, objects are definitely the answer.
you have several functions, which share the same state. that's very
feature set much less a release date.
+1
I occasionally teach PHP courses and mention up coming features,
but always with the caveat: nothing is set in stone until it hits the streets.
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Alain Williams
Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT
Lecturer.
+44 (0
if type juggle - should the rules be stricter than normal ?
I agree that this would be a good idea - and could lead to better/faster code.
+1
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Alain Williams
Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT
Lecturer.
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