Re: [PHP] whats wrong
On Fri, Mar 30, 2012 at 11:45 PM, saeed ahmed wrote:
> i have made a php script with a tutorial helpi dont know where is a
> error.please have a look
>
Your code below assumes that everything is perfect in your world. IE:
no network connectivity issue, all firewall related are properly
configured, the user account actually exists and have the right
permissions, the database exists and so are the table(s), etc I
suggest you revisit the official PHP manual and read about each
function you're using.
>
> //connect and select a database
> mysql_connect("localhost","root"," " );
for starters,
http://php.net/function.mysql-connect
Noticed the result returned. You didn't bother to check whether if
it's successful or not. If not why not? Since the DB is on the same
box, is the firewall, if any, configured properly? If there's no
firewall or if it's configured properly, is the account valid and have
the right permissions? Is the MySQL server running on the default
port 3306?
If you don't know how to configure each of the above mentioned, allow
me to introduce you a new friend, Google ;) Both of those topics are
beyond the scope of this list.
HTH,
Tommy
> mysql_select_db("addressbook");
> //Run a query
> $result=mysql_query("select("SELECT*FROM COLLEAGUE");
> ?>
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
> http://www.w3.org/1999/xhtml";>
>
> Address Book
>
>
> Address Book
> summary="table holda colleague contacts information">
>
> ID
> First Name
> Last Name
> Telephone
> Email Address
>
> //LOOP through all table rows
> while ($row=mysql_fetch_array($result)) {
> echo"";
> echo"".$row['id'] . ";
> echo "" . $row['firstName'] . "";
> echo "" . $row['lastName'] . "";
> echo "" . $row['telephone'] . "";
> echo "" . Srow['email'] . " echo"";
> }
> //free result memory and close database connection
> mysql_free_result($result);
> mysql_close();
> ?>
>
>
>
> thanks
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] some good deals on good books
On Sat, Mar 31, 2012 at 12:02 AM, tamouse mailing lists wrote: > > ( I apologize if this offends anyone's sensibilities. I am not in the > employ of O'Reilly, nor is this going to make me any scratch. I just > think this is a good chance to pick up some pretty useful books. ) > Makes a lot of sense to me for someone kind enough to share a great offer to fellow coders/hackers :) Thanks. I'll pass this along to the folks newly interested in PHP. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] securing a script that exec()s
On Sat, Mar 31, 2012 at 1:37 AM, rene7705 wrote: > escapeshellcmd() seems simplest. It might be if all you care about are shell meta characters, and admittedly it will save you from someone entering "& rm -rf / &" in your input field. But dealing with generic user input, even escaped, can still be problematic. Say you want to let the user set the size of the output file, and the user enters a bunch of letters instead of a geometry. Do you really want to have to deal with all the possible ramifications of such GIGO stuff? Better to vet the data, untaint it, and deal with it that way. When you've gone to all that, you're almost all the way to where you need to be to use the library functions. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] whats wrong
Please check this line:
> $result=mysql_query("select("SELECT*FROM COLLEAGUE");
I think it should be:
> $result=mysql_query("SELECT * FROM COLLEAGUE");
On Sat, Mar 31, 2012 at 1:45 PM, saeed ahmed wrote:
> i have made a php script with a tutorial helpi dont know where is a
> error.please have a look
>
>
> //connect and select a database
> mysql_connect("localhost","root"," " );
> mysql_select_db("addressbook");
> //Run a query
> $result=mysql_query("select("SELECT*FROM COLLEAGUE");
> ?>
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
> http://www.w3.org/1999/xhtml";>
>
> Address Book
>
>
> Address Book
> summary="table holda colleague contacts information">
>
> ID
> First Name
> Last Name
> Telephone
> Email Address
>
> //LOOP through all table rows
> while ($row=mysql_fetch_array($result)) {
> echo"";
> echo"".$row['id'] . ";
> echo "" . $row['firstName'] . "";
> echo "" . $row['lastName'] . "";
> echo "" . $row['telephone'] . "";
> echo "" . Srow['email'] . " echo"";
> }
> //free result memory and close database connection
> mysql_free_result($result);
> mysql_close();
> ?>
>
>
>
> thanks
>
--
Duken Marga
[PHP] Att: saeed ahmed
Try this:
mysql> CREATE DATABASE addressbook;
Query OK, 1 row affected (0.00 sec)
mysql> USE addressbook;
Database changed
mysql> CREATE TABLE userData(id INT(4) NOT NULL AUTO_INCREMENT PRIMARY KEY,
firstName VARCHAR(50) NOT NULL,
lastName VARCHAR(50) NOT NULL,
telephone INT(12) NOT NULL,
email VARCHAR(100) NOT NULL);
Query OK, 0 rows affected (0.11 sec)
Now when you have the databse created and a table to store data, you
need to write a PHP page that do the trick.
Here is a simpe sample. Read all comments and look at the source code...
http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd";>
http://www.w3.org/1999/xhtml"; xml:lang="en">
Addressbook
Contact info:
First Name:
Last Name:
Telephone:
Email Address:
The Contact information is registred";
}
?>
View Contact Info
First Name: $firstName";
echo "Last Name: $lastName";
echo "Telephone: $telephone";
echo "Email: $email";
echo "";
}
}
?>
Hope this can be in help for you.
Karl
--
Hjemmeside: http://www.karl-arne.name/
Den 08:45 31. mars 2012 skrev saeed ahmed følgende:
> i have made a php script with a tutorial helpi dont know where is a
> error.please have a look
>
>
> //connect and select a database
> mysql_connect("localhost","root"," " );
> mysql_select_db("addressbook");
> //Run a query
> $result=mysql_query("select("SELECT*FROM COLLEAGUE");
> ?>
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
> http://www.w3.org/1999/xhtml";>
>
> Address Book
>
>
> Address Book
> summary="table holda colleague contacts information">
>
> ID
> First Name
> Last Name
> Telephone
> Email Address
>
> //LOOP through all table rows
> while ($row=mysql_fetch_array($result)) {
> echo"";
> echo"".$row['id'] . ";
> echo "" . $row['firstName'] . "";
> echo "" . $row['lastName'] . "";
> echo "" . $row['telephone'] . "";
> echo "" . Srow['email'] . " echo"";
> }
> //free result memory and close database connection
> mysql_free_result($result);
> mysql_close();
> ?>
>
>
>
> thanks
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] whats wrong
On Sat, Mar 31, 2012 at 1:45 AM, saeed ahmed wrote:
> i have made a php script with a tutorial helpi dont know where is a
> error.please have a look
Before you actually run code in a browser, check your syntax with php
-l (for "lint", the old command to check C syntax on unixy systems) on
a command line. This will improve your life immeasurably since you
won't have to chase down where the server logs errors just to see if
your code was syntactically correct.
miishka:Sites tamara$ php -l test.saeed.php
PHP Parse error: syntax error, unexpected T_STRING in test.saeed.php on line 6
Errors parsing test.saeed.php
miishka:Sites tamara$
Which points out the syntax error on line 6 where you have:
$result=mysql_query("select("SELECT*FROM COLLEAGUE");
Which as an improperly formed select sql, and an unclosed string (thus
sucking up part of your php code and html document. To fix this, it
should be:
$result=mysql_query($db, "SELECT * FROM COLLEAGUE");
i.e., the sql statement is in a single string. Also, spacing around
the column list "*" may or may not be necessary, but it's a lot easier
to read if it's there. Also, you need to tell the query procedure what
data base you're using the $db variable (see below for this).
Ok, that fixed, run php -l on the file again, and we get:
PHP Parse error: syntax error, unexpected '>' in test.saeed.php on line 31
Errors parsing test.saeed.php
Looking at line 31:
echo "" . $row['firstName'] . "";
it looks fine, you might be wondering why it's complaining about that
line. The key is to look up from there for possible syntax problems,
and on line 30, there is a problem in that you didn't close the last
string:
echo"".$row['id'] . ";
should be:
echo"".$row['id'] . "";
Ok, fix that, run php -l again:
PHP Parse error: syntax error, unexpected '[', expecting ',' or
';' in test.saeed.php on line 34
Errors parsing test.saeed.php
So, look at line 34 now:
echo "" . Srow['email'] . "" . $row['email'] . "" . $row['email'] . "";
Run php -l again, and this time, voila:
No syntax errors detected in test.saeed.php
That solves your syntax errors. Now you can test it from a server.
Before you do that though, a few other points:
When developing code, it's a really good idea to turn on run time
error checking so you can see things in the browser when a problem
crops up:
" since you're using XHTML.
Line 39 needs to have the data base resource as well that was set
above in the connect:
mysql_close($db);
You owe me one internet bheer for debugging your script. :)
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Could apc_fetch return a pointer to data in shared memory ?
On 31 Mar 2012, at 02:33, Simon wrote: > Or: Why doesn't PHP have Applications variables like ASP.NET (and node.js) > ? > > Hi, > > I'm working on optimising a php application (Drupal). > > The best optimisation I've found so far is to use APC to store various bits > of Drupal data in RAM. > > The problem with this is that with Drupal requiring say 50Mb of data* per > request is that lots of cpu cycles are wasted de-serialising data out of > apc_fetch. Also 50Mb of data per http process !! is wasted by each one > re-creating it's own copy of the shared data. 50MB? WTF is it storing?? I've never used Drupal, but based purely on that it sounds like an extremely inefficient piece of software that's best avoided! > If it were possible for apc_fetch (or similar function) to return a pointer > to the data rather than a copy of the data this would enable incredible > reduction in cpu and memory usage. Vanilla PHP adheres to a principle known as "shared nothing architecture" in which, shockingly, nothing is shared between processes or requests. This is primarily for scalability reasons; if you stick to the shared nothing approach your application should be easily scalable. > This is essentially how ASP.NET Application variables and node.js work. Not a valid comparison. Node.js applications can only share variables within a single process, and they can do so because it's single-threaded. Once you scale your app beyond a single process you'd need to add a custom layer on to share data between them. I'm not sure about the architecture behind IIS and ASP.net but I imagine there are similar paradigms at work. > I'm surprised PHP doesn't already have Application variables, given that > they are so similar to Session Variables and that it's been around for a > long time in ASP / ASP.NET. Just because x does it, doesn't mean y should. I've used lots of languages over the years, including classic ASP, ASP.net, Perl, Python, Ruby, PHP (obv), and more, and I'm yet to see a compelling reason to want application variables. Let go of the possibility of application variables and your thinking will shift to other ways of solving the problem. > I just wondered if there was a reason for not having this functionality or > if it's on a road map somewhere or I've missed something :) ? As far as I am aware, ASP and ASP.net are the only web technologies to support application variables out of the box. You think that's simply because the others just haven't gotten around to it yet? -Stuart -- Stuart Dallas 3ft9 Ltd http://3ft9.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] whats wrong
On 31-03-2012 10:29, tamouse mailing lists wrote:
On Sat, Mar 31, 2012 at 1:45 AM, saeed ahmed wrote:
i have made a php script with a tutorial helpi dont know where is a
error.please have a look
Before you actually run code in a browser, check your syntax with php
-l (for "lint", the old command to check C syntax on unixy systems) on
a command line. This will improve your life immeasurably since you
won't have to chase down where the server logs errors just to see if
your code was syntactically correct.
miishka:Sites tamara$ php -l test.saeed.php
PHP Parse error: syntax error, unexpected T_STRING in test.saeed.php on line 6
Errors parsing test.saeed.php
miishka:Sites tamara$
Which points out the syntax error on line 6 where you have:
$result=mysql_query("select("SELECT*FROM COLLEAGUE");
Which as an improperly formed select sql, and an unclosed string (thus
sucking up part of your php code and html document. To fix this, it
should be:
$result=mysql_query($db, "SELECT * FROM COLLEAGUE");
Wrong, it should be the other way around. First the query, and then an
OPTIONAL link-identifier (which I assume $db to be in this case).
i.e., the sql statement is in a single string. Also, spacing around
the column list "*" may or may not be necessary, but it's a lot easier
to read if it's there. Also, you need to tell the query procedure what
data base you're using the $db variable (see below for this).
Ok, that fixed, run php -l on the file again, and we get:
PHP Parse error: syntax error, unexpected '>' in test.saeed.php on line 31
Errors parsing test.saeed.php
Looking at line 31:
echo "" . $row['firstName'] ."";
it looks fine, you might be wondering why it's complaining about that
line. The key is to look up from there for possible syntax problems,
and on line 30, there is a problem in that you didn't close the last
string:
echo"".$row['id'] .";
should be:
echo"".$row['id'] ."";
Ok, fix that, run php -l again:
PHP Parse error: syntax error, unexpected '[', expecting ',' or
';' in test.saeed.php on line 34
Errors parsing test.saeed.php
So, look at line 34 now:
echo "" . Srow['email'] ."" . $row['email'] ."" . $row['email'] ."";
Run php -l again, and this time, voila:
No syntax errors detected in test.saeed.php
That solves your syntax errors. Now you can test it from a server.
Before you do that though, a few other points:
When developing code, it's a really good idea to turn on run time
error checking so you can see things in the browser when a problem
crops up:
Again, query first, linkidentifier after that. This way you'll always
get an error.
if (FALSE === $result) die ("Query failed. \$sql=$sql. Error: " .
mysql_error($db) . PHP_EOL);
A little further on, there is a problem in the html meta statement:
there is no closer on that line:
" since you're using XHTML.
Line 39 needs to have the data base resource as well that was set
above in the connect:
mysql_close($db);
You owe me one internet bheer for debugging your script. :)
You made mistakes during debugging :s
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Watch out for automatic type casting
On 30-03-2012 09:47, Arno Kuhl wrote:
-Original Message-
From: Simon Schick [mailto:simonsimc...@googlemail.com]
Sent: 29 March 2012 07:19 PM
To: a...@dotcontent.net
Cc: php-general@lists.php.net
Subject: Re: [PHP] Watch out for automatic type casting
Hi, Arno
FYI: I found a page in the php-manual that's exactly for that:
http://www.php.net/manual/en/language.operators.precedence.php
p.s. some of them were also new to me Thanks for getting me to read it.
Bye
Simon
Thanks Simon and others, thought it was typecasting, but precedence makes more
sense.
I remember seeing that table when I first started using php, which is why I always use
AND and OR rather than&& and || because it's lower precedence than the
assignment and the ternary operators, but I couldn't remember where I'd seen it. So
thanks for linking to it.
Cheers
Arno
--
BTW interesting to note on that precedence page that "!" has a higher precedence than
"=" (which you'd expect it to be) but you can still do
if (!$a = foo())
I use that form often (as I'm sure many others do) and just took it for granted
that it works even though the order of precedence says it shouldn't.
It could be expanded to
if ($a = foo() != TRUE)
But that wouldn't get the expected result due to order of precedence, though at
first glance you could reasonably expect it to work because of
if (!$a = foo())
being valid.
I think that's why it's so easy to be caught out (at least for me) by the
similar form of
if ( $pos = strpos($sText, "test") !== FALSE)
Cheers
Arno
I would still suggest to explicitly supply the precedence you expect.
Ie: if(($foo = $var) == true) { }
or if($a + (15*$b) ) { }
I know you can write it with fewer parentheses, but this at least makes
it 100% clear you at all times WHAT is supposed to happen and you're
100% sure that PHP will understand what you WANT it to do aswell instead
of having to guess, and fail at it because you don't know how guessing
is implemented in the Zend Engine.
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Websocket using php
Hello, I have the need to use websockets for the server part of an application I am developing and I found with a big surprise no websocket class or procedure is available on the net. Have I missed looking in some place? Being really interested in using this protocol with PHP, I start from the closest working thing: http://code.google.com/p/phpwebsocket/ and start adapting it to the lastest RFC describing the protocol http://tools.ietf.org/html/rfc6455, but it is really heavy to code and I feel like "reinventing the wheel". Is there anyone out there who has already written a websocket server in PHP and like to share the code? Leandro
Re: [PHP] Thinking out loud - a continuation...
[snip]
On 3/30/2012 1:14 PM, Robert Cummings wrote:
On 12-03-27 11:11 AM, Jay Blanchard wrote:
[snip]On 3/27/2012 12:21 AM, Robert Cummings wrote:
>> [-- SNIP --]
Essentially, entries at the root and entries for the children are just
auto indexed array items but the actual entries in those arrays retain
the associative index structure for retrieval of the specific
information. let me know and I can probably whip you up something.
Robert that looks correct. Here is an example of the JSON that the guy
provided for me -
var json = {
id: "node02",
name: "0.2",
data: {},
children: [{
id: "node13",
name: "1.3",
data: {},
children: [{
id: "node24",
name: "2.4",
data: {},
children: [{
id: "node35",
name: "3.5",
data: {},
children: [{
id: "node46",
name: "4.6",
data: {},
children: []
}]
}, {
id: "node37",
name: "3.7",
data: {},
children: [{
id: "node48",
name: "4.8",
data: {},
children: []
}, {
id: "node49",
name: "4.9",
data: {},
children: []
}, {
id: "node410",
name: "4.10",
data: {},
children: []
}, {
id: "node411",
name: "4.11",
data: {},
children: []
}]
},
Of course he properly closes up the JSON. I inserted id's (just an
auto-incrementing number) and the data portion where needed. The name:
is the part that has been the result of what you did before.
Here's the code... I did a bit of shuffling and actually tested
against a test db table:
And here's the code:
getConnectionRef();
$query =
"SELECT DISTINCT "
." * "
."FROM "
." tiers "
."WHERE "
." company = {$company} ";
$root = array();
if( $db->query( $query ) )
{
while( ($row = $db->fetchRow()) )
{
$focus = &$root;
for( $i = 1; $i <= 14; $i++ )
{
$name = trim( $row['tier'.$i] );
if( $name === '' )
{
break;
}
if( !isset( $focus[$name] ) )
{
$focus[$name] = array
(
'name' => $name,
'children' => array(),
);
}
$focus = &$focus[$name]['children'];
}
}
}
$wrapper = array
(
'children' => &$root
);
postProcessTiers( $wrapper );
return $root;
}
function postProcessTiers( &$root )
{
$root['children'] = array_values( $root['children'] );
foreach( array_keys( $root['children'] ) as $index )
{
postProcessTiers( $root['children'][$index] );
}
}
function getTiersJson( $company )
{
$tiers = getTiers( $company );
$json = JSON_encode( $tiers );
}
$tiersJson = getTiersJson( 1 );
?>
This will output JSON with the following structure:
PHP is smart enough to detect an array that only has consecutive
integer keys and create the appropriate JavaScript array object. So we
don't have to do any special processing of the JSON after we've post
processed the tier structure itself.
[/snip]
Thanks Robert - I'll give this a go later today.
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Node.PHP
On Fri, Mar 30, 2012 at 21:33, Michael Save wrote: > Because "normal" PHP is not asynchronous. > > Also, I kind of doubt you can outperform node.js with standard PHP. Your doubts are indeed well-grounded. Using node.js (indeed, V8-based apps in general) are compiled as native machine code, which don't require the added overhead of a parser, such as PHP. With that said, compiling PHP (such as with HopHop) would give at least comparable performance results. Still, all in all, I would never discourage someone doing a 'node.php' application. While its performance may not be quite as good speed-wise, that doesn't mean it can't become more robust, more generally-applicable, or even just find niche uses. I've written numerous socket servers in PHP for a variety of clients and uses, where they made sense (speed of deployment, ease of code-management by a number of developers who don't know C, et cetera). I can easily see where this could add value. -- Network Infrastructure Manager http://www.php.net/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] some good deals on good books
On Sat, Mar 31, 2012 at 03:02, tamouse mailing lists wrote: > I know there are quite a few people here who are just beginning to > learn how to write programs as they also learn about PHP. O'Reilly has > a deal on some pretty important books available electronically, save > 50%. If this appeals to you, head to < > http://shop.oreilly.com/category/deals/essential-code.do > and check > them out. > > ( I apologize if this offends anyone's sensibilities. I am not in the > employ of O'Reilly, nor is this going to make me any scratch. I just > think this is a good chance to pick up some pretty useful books. ) There was no affiliate code, so it doesn't appear as though there was any ulterior motive. As such, if anyone is offended, perhaps they don't quite possess "sensibilities." ;-P The link you provided will also benefit a lot who read the list via numerous external sources, such as forums that auto-populate with content from these lists, and the archives, which are slurped by Google so quickly that, on occasion, I've seen posts show up in Google before I even get the chance to read the original email. Great job on a thoughtful post. -- Network Infrastructure Manager http://www.php.net/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Websocket using php
On Sat, Mar 31, 2012 at 5:14 PM, Leandro Dardini wrote: > Hello, > I have the need to use websockets for the server part of an application I > am developing and I found with a big surprise no websocket class or > procedure is available on the net. Have I missed looking in some place? > > Being really interested in using this protocol with PHP, I start from the > closest working thing: http://code.google.com/p/phpwebsocket/ and start > adapting it to the lastest RFC describing the protocol > http://tools.ietf.org/html/rfc6455, but it is really heavy to code and I > feel like "reinventing the wheel". > > Is there anyone out there who has already written a websocket server in PHP > and like to share the code? > > Leandro Have you tried http://code.google.com/p/phpws/ ? It seems to work pretty simple.. - Matijn -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Could apc_fetch return a pointer to data in shared memory ?
On 31 Mar 2012, at 13:14, Simon wrote: > Thanks again Stuart. > > On 31 March 2012 12:50, Stuart Dallas wrote: >> On 31 March 2012 11:19, Simon wrote: >> Thanks for your answer. >> >> On 31 March 2012 09:50, Stuart Dallas wrote: >> On 31 Mar 2012, at 02:33, Simon wrote: >> >> > Or: Why doesn't PHP have Applications variables like ASP.NET (and node.js) >> > ? >> > >> > Hi, >> > >> > I'm working on optimising a php application (Drupal). >> > >> > The best optimisation I've found so far is to use APC to store various bits >> > of Drupal data in RAM. >> > >> > The problem with this is that with Drupal requiring say 50Mb of data* per >> > request is that lots of cpu cycles are wasted de-serialising data out of >> > apc_fetch. Also 50Mb of data per http process !! is wasted by each one >> > re-creating it's own copy of the shared data. >> >> 50MB? WTF is it storing?? I've never used Drupal, but based purely on that >> it sounds like an extremely inefficient piece of software that's best >> avoided! >> >> All sorts of stuff (taxonomies, lists of data, menu structures, >> configuration settings, content etc). Drupal is a sophisticated application. >> Besides, 50Mb of data seems like relatively tiny "application state" to want >> to access in fastest possible way. It's not hard to imagine wanting to use >> *much* more than this in future >> >> >> > If it were possible for apc_fetch (or similar function) to return a pointer >> > to the data rather than a copy of the data this would enable incredible >> > reduction in cpu and memory usage. >> >> Vanilla PHP adheres to a principle known as "shared nothing architecture" in >> which, shockingly, nothing is shared between processes or requests. This is >> primarily for scalability reasons; if you stick to the shared nothing >> approach your application should be easily scalable. >> >> Yes, I know. I think the effect of this is that php will scale better (on >> average) in situations where requests don't need to share much data such as >> "shared hosting". In an enterprise enviroment where the whole server might >> be dedicated to single application, "shared nothing" seems to be a synonym >> for "re-load everything" ? >> >> Yes, on one level that is what it means, but alternatively it could mean >> being a lot more conservative about what you load for each request. > > Um, I want to be *less* conservative. Possibly *much* less. (like Gigabyes or > even eventually Petabytes of shared data !) We appear to have drifted off the point. There's a big difference between data that an application needs to access and "application variables". What you're describing is a database. If you want something more performant there are ways to optimise access to that amount of data, but if not I've completely lost what the problem is that you're trying to solve. >> > This is essentially how ASP.NET Application variables and node.js work. >> >> Not a valid comparison. Node.js applications can only share variables within >> a single process, and they can do so because it's single-threaded. Once you >> scale your app beyond a single process you'd need to add a custom layer on >> to share data between them. >> >> I'm not sure about the architecture behind IIS and ASP.net but I imagine >> there are similar paradigms at work. >> >> I totally agree although, I *think* IIS uses multiple threads running in a >> single process (or "Application Pool"). >> I realise that ASP.NET / node.js have their own architectural issues but I'm >> confident that for enterprise applications >> (ie Drupal) the option for "shared something" is capable of many orders of >> magnitude higher performance and scalability than "shared nothing". >> >> And that's why there are so many options around that enable such >> functionality. The need for something doesn't in any way imply that it >> should be part of the core system. Consider the impact such a requirement >> would have on the environment in which you run PHP. By delegating that >> "feature" to third-party modules, the PHP core doesn't need to concern >> itself with the details of how to share data between processes on every >> target platform. > > Agreed. If you were able to point me in the direction of such a 3rd party > module I'd be a very happy man. APC and memcached are two of the most common examples, other than the vast array of DBMSes out there. >> > I'm surprised PHP doesn't already have Application variables, given that >> > they are so similar to Session Variables and that it's been around for a >> > long time in ASP / ASP.NET. >> >> Just because x does it, doesn't mean y should. I've used lots of languages >> over the years, including classic ASP, ASP.net, Perl, Python, Ruby, PHP >> (obv), and more, and I'm yet to see a compelling reason to want application >> variables. >> >> The reason that I'm suggesting this is because taking the example of Drupal, >> the ability to share information
