Re: [PHP] Encryption failing
(forgot to copy the list) On Jan 16, 2008, at 5:08 PM, Richard Lynch wrote: Is it possible that 4% of the time, you have spaces on the start/end of the string, which get trimmed before encryption? In this case, no. In trying to simplify the situation to narrow the possibilities of error, I am generating random character strings of only alphanumeric (or numeric-only) characters. Each is exactly 16 characters. And if rijndael is one of the algorithms which requires a fixed-size input, that also would be bad to trim it. No documentation that I was able to find suggests that requirement. Actually, I'd suggest that the encryption function has no business trimming the text anyway. Philosophically I agree with you, but mCrypt has this nasty habit of appending bunches of nulls to the decrypted string. So philosophical purity gives way to practical application. Good ideas, as usual. Thank you. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Encryption failing
On Jan 15, 2008, at 10:48 PM, Casey wrote: It returns the correct value. If you look at the last example, and run base64_decode on MDAwMzEwMDI0NDA0MTMyOQ==, you will get 0003100244041329. Oops. Haste makes crappy programming. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Encryption failing
On Jan 16, 2008, at 1:28 AM, Andrés Robinet wrote: 1 - Mike is right about first encrypting and then doing a base64_encode (then saving results to DB, cookies, etc). I don't know why replacing to + for decrypting, though. His other post explains that php didn't seem to like spaces. No spaces in the test strings -- I'll check for those when/if I can get the core en/decryption working. 2 - Mike is also right about $text = base64_decode($text) which should be $text = base64_decode($text_out) I think. Yup -- that's what i get for trying to do this hastily and late at night -- 3 - You are trimming the results on return, according to one post in the manual notes this will remove null padding on the decrypted string. This is desired, most of the time, but if the original (cleartext message) string ended in nulls you will get a difference and that may be the cause of the errors you are getting. I understand that, thank you. There are no trailing nulls on the original string. After correcting the my program, I still get the same results, about 4% wrong: 70: String: 5214006139804600 -|- Enc: Ϊ%bÇCsšBsìD%Å#z[ä . m…‡¿m§ð -|- Dec:àc8 -|- Nope 75: String: 1034702254251899 -|- Enc: !:Ã2ºÍé× »àe 2s? :Ù0LµŒÕ[« -|- Dec:à`*' -|- Nope 89: String: 8245007043826594 -|- Enc: µÆ Íãd-‘Á´E3½yÍ×v‹,ZØWéûqüŽ‚ó -|- Dec:[EMAIL PROTECTED] -|- Nope etc. Wrong: 23/500 Phooey. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Encryption failing
Many thanks, Mike --- yours works great... 0 errors.
On Jan 16, 2008, at 9:24 AM, mike wrote:
function data_encrypt($data) {
if(!$data) { return false; }
return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256,
$GLOBALS['config']['salt'], $data, 'cbc', md5($GLOBALS['config']['
salt'].$GLOBALS['config']['salt'])));
}
function data_decrypt($data) {
if(!$data) { return false; }
return rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256,
$GLOBALS['config']['salt'], base64_decode(str_replace(' ', '+',
$data)), '
cbc', md5($GLOBALS['config']['salt'].$GLOBALS['config']['salt'])));
}
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[PHP] Encryption failing
Hey --- - -
I am in the process of upgrading the encryption technology I am using
from (64 bit) blowfish to (256 bit) rijndael.
The code (and some explanations) is below, but the results are, um,
unusual, and I can't see what I am doing wrong. For testing, I have a
program that generates a random 16-character string, encrypts it to a
variable, and decrypts it. Running it in 500 iteration loops, it
fails roughly 4% of the time. By fails I mean that the original
string and the eventual decrypted one don't match.
Anybody able to spot why?
Ken
--
function jagencdecr($text,$EorD,$encpass='') {
// parameters:
// - $text = string to be en/decrypted,
// - $EorD = Encrypt or Decrypt
// - $encpass = key phrase
if (empty($text)) {return ;}
$text = trim($text);
$cypher = mcrypt_module_open('rijndael-256', '', 'ecb', '');
// ecb mode produces the above results.
// ofb mode produces 100% errors
$size = mcrypt_enc_get_iv_size($cypher);
$phprand = rand(1000,);
$iv = mcrypt_create_iv($size,$phprand); // produces the same results
as below, platform independent
//$iv = mcrypt_create_iv($size,MCRYPT_RAND); // for Windows
//$iv = mcrypt_create_iv($size,MCRYPT_DEV_RAND); // for 'NIX
$ks = mcrypt_enc_get_key_size($cypher);
/* Create key */
$key = substr(md5($encpass), 0, $ks);
mcrypt_generic_init($cypher,$key,$iv);
if ($EorD == D) {
$text_out = mdecrypt_generic($cypher,$text);
} else {
$text_out = mcrypt_generic($cypher,$text);
} // endif ($EorD == D)
mcrypt_generic_deinit($cypher);
mcrypt_module_close($cypher);
return trim($text_out);
} // endfunc jagencdecr Jaguar Ecnrypt/Decrypt
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Re: [PHP] Encryption failing
On Jan 15, 2008, at 7:06 PM, Casey wrote: Maybe you could echo the results of the failed ones and compare. I did that at first, thinking that something about these strings might cause the problem. But then I realized: I can't blame the data. I don't have any control over what users use for passwords, for example. this thing is supposed to en/decrypt the strings I gige it, so there must be some kind of programming flaw. FWIW, there was no discernible pattern to the failed strings, at least not to me. (Not that it matters.) Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Encryption failing
On Jan 15, 2008, at 11:08 PM, Andrés Robinet wrote: -Original Message- From: Bastien Koert [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 16, 2008 12:55 AM To: Ken Kixmoeller -- reply to [EMAIL PROTECTED]; php- [EMAIL PROTECTED] Subject: RE: [PHP] Encryption failing are you base64 encoding the resultant encryption string? I have found that there are problems with certain characters that can result from the encryption, usually a combination of characters that approximate a null or end of line bastien From: [EMAIL PROTECTED] Date: Tue, 15 Jan 2008 21:41:45 - 0600 To: php-general@lists.php.net Subject: Re: [PHP] Encryption failing On Jan 15, 2008, at 7:06 PM, Casey wrote: Maybe you could echo the results of the failed ones and compare. I did that at first, thinking that something about these strings might cause the problem. But then I realized: I can't blame the data. I don't have any control over what users use for passwords, for example. this thing is supposed to en/decrypt the strings I gige it, so there must be some kind of programming flaw. FWIW, there was no discernible pattern to the failed strings, at least not to me. (Not that it matters.) Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php I second that, you should base64 encode values before encrypting and base64 decode them after decrypting to be safe. Rob Andrés Robinet | Lead Developer | BESTPLACE CORPORATION 5100 Bayview Drive 206, Royal Lauderdale Landings, Fort Lauderdale, FL 33308 | TEL 954-607-4207 | FAX 954-337-2695 Email: [EMAIL PROTECTED] | MSN Chat: [EMAIL PROTECTED] | SKYPE: bestplace | Web: http://www.bestplace.biz | Web: http://www.seo- diy.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Encryption failing
On Jan 15, 2008, at 11:08 PM, Andrés Robinet wrote:
I second that, you should base64 encode values before encrypting
and base64
decode them after decrypting to be safe.
Thanks for the idea.
Like this? Fails 500/500 times on my test.
if ($EorD == D) {
$text_out = mdecrypt_generic($cypher,$text);
$text = base64_decode($text);
} else {
$text= base64_encode($text);
$text_out = mcrypt_generic($cypher,$text);
} // endif ($EorD == D)
A quick test looks like this:
1: String: 9334133814260182
-|- Enc: X5Þ©·ža`p#È]#c¦±3ÔýCõÒiÏ~r¢Tª
-|- Dec:OTMzNDEzMzgxNDI2MDE4Mg== -|- Nope
2: String: 3027022406512648
-|- Enc: j£n,h\mê´ uKP%¥†¼D}H‚’f¢š„
-|- Dec:MzAyNzAyMjQwNjUxMjY0OA== -|- Nope
3: String: 5042504153020331
-|- Enc: 9ÿ• ýŸÝ§¤6Wi+€×Ÿéáonñº*J6}Ø+„
-|- Dec:NTA0MjUwNDE1MzAyMDMzMQ== -|- Nope
4: String: 6741156238850410
-|- Enc: ·:´[Úq\‹ë‹4\Q«ÍŽ5±{º‡µØtþðtN?b
-|- Dec:Njc0MTE1NjIzODg1MDQxMA== -|- Nope
5: String: 0003100244041329
-|- Enc: D¾¤ úV:!Mû 4ƒÜ€àœ‰ŽòÐÐ^ïHñ-š%z
-|- Dec:MDAwMzEwMDI0NDA0MTMyOQ== -|- Nope
Wrong: 5/5
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Re: [PHP] Generating foldout menus in php
On Sep 3, 2007, at 12:42 PM, tedd wrote: that would be more complicated than just using css with js, like so: http://sperling.com/examples/menuh/ http://sperling.com/examples/menuv/ Why complicate your life? Hey, tedd - - - - I like this tool, and am playing with it -- -- Just wondering, though, if you have ever created PHP code to generate these menus on-the-fly? I am working on an intranet application in which I take values from rights-and-responsibilities tables and use it to generate navigation options. Got a start on it, but if you already had some code I'd appreciate getting a gander at it. KixJaguar - - -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Generating foldout menus in php
On Sep 6, 2007, at 11:02 AM, Edward Kay wrote: You may want to take a look at Yahoo's YUI menu: http://developer.yahoo.com/yui/menu/ These can be defined using standard XHTML markup. Thank you --- I will do that -- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Generating foldout menus in php
On Sep 6, 2007, at 10:47 AM, Ken Kixmoeller -- reply to [EMAIL PROTECTED] wrote: Just wondering, though, if you have ever created PHP code to generate these menus on-the-fly? Never mind === I got it working. (Mechanically) -- Aesthetically, though, even though I used the horizontal classes, it comes out vertical -- any clues? thanks --- Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Generating foldout menus in php
On Sep 6, 2007, at 1:17 PM, Ken Kixmoeller -- reply to [EMAIL PROTECTED] wrote: Aesthetically, though, even though I used the horizontal classes, it comes out vertical Never mind (not that you did) -- got it working fine --- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Removing a row from an Array
On Jun 5, 2007, at 5:20 PM, Richard Lynch wrote: am I missing something (other than a few brain cells)? http://php.net/unset As in, unset($array['goner']); Yup, that's the one. Thanks to you, too. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Removing a row from an Array
Hey - - - - - - -- To do this, I am: - looping through the array - copying the rows that I want to *keep* to a temp array, and - replacing the original array with the temp' one. Seems convoluted, but I couldn't find any function to remove a row of an array. Am I missing something (other than a few brain cells)? thanks - - - Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Removing a row from an Array
On Jun 4, 2007, at 2:25 PM, Jay Blanchard wrote: http://us2.php.net/manual/en/function.array-pop.php Thanks, Jay --- I did see that function, but forgot about it when I asked the question. I should have added that *any* array row among many could be the one that needs to be removed. I couldn't figure out how to reorder the array so that POP would work. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Removing a row from an Array
On Jun 4, 2007, at 3:29 PM, Peter Lauri wrote: You could use unset() for the rows you don't want to keep. Ah --- yes, that looks like it would do it. I was expecting something to find something array-specific. Thank you, Pater and Roberto -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Removing a row from an Array
On Jun 4, 2007, at 3:27 PM, Al wrote: What determines the rows you want to keep? User selection. The array is essentially a shopping cart-type of object. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Capture the whole URL
On Feb 22, 2007, at 10:26 PM, tedd wrote: Print out these three and you'll see your problem. $_SERVER['SERVER_NAME'] $_SERVER['QUERY_STRING'] $_SERVER['REQUEST_URI'] Thanks, Tedd - - REQUEST_URI still generates a Undefined Index error SERVER_NAME on my testing server returns its IP ***QUERY_STRING*** is the one I wanted. I didn't see it (but then again, I am working through the worst head cold I have had in years. My head is a solid block. Watta pain.) Many thanks. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Capture the whole URL
On Feb 23, 2007, at 12:18 AM, Jim Lucas wrote: diddly.com?id=fredtotal=goof First of forgoing the http:// missing, this still isn't a qualified URL Yeah, I was just giving an example of what I wanted. echo $_SERVER['REQUEST_URI']; and see what it returns I said in the post, it returns an error: Undefined index. I wonder if this doesn't work on a Wintel server? Is it supposed to return the whole thing? if for some odd reason that doesn't work try: echo $_SERVER ['QUERY_STRING']; Yes, thanks, that gave me what I wanted, or at least it will together with 'PHP_SELF' that part of the URL that I wasn't getting otherwise. show us an example of the script that generates the error I was testing just with simple echo statements. Looks like you either typed this pretty fast or maybe you had a few typo's. Review your code and check that you are using underscores and not hyphens. Yes, sorry -- I was both in a hurry (wife gently beckoning me to get moving) and drugged up. My code was syntacticly correct. Thank you for your help, Jim. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Capture the whole URL
On Feb 22, 2007, at 4:33 PM, Jochem Maas wrote: do a var_dump($_SERVER); or phpinfo(); to see what you do have available. 'REQUEST_URI' doesn't show. Now I see the line in the documentation that says You may or may not find any of the following elements... How do I find out whether QUERY_STRING will work on the working server? I'll do some searching, but is anyone aware of a resource that tells which server hardware/software supports which ones? H... it might be smarter to use the $_GET's to recreate the string if these things are inconsistent. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Capture the whole URL
On Feb 23, 2007, at 7:46 AM, tedd wrote: On Feb 22, 2007, at 10:26 PM, tedd wrote: Print out these three and you'll see your problem. $_SERVER['SERVER_NAME'] $_SERVER['QUERY_STRING'] $_SERVER['REQUEST_URI'] Thanks, Tedd - - REQUEST_URI still generates a Undefined Index error SERVER_NAME on my testing server returns its IP ***QUERY_STRING*** is the one I wanted. I didn't see it (but then again, I am working through the worst head cold I have had in years. My head is a solid block. Watta pain.) Many thanks. Ken Ken: As per my understanding, the $_SERVER['REQUEST_URI'] should give you something -- after all, it's from where the request came from (i.e., your app). In your code, simply do a print_r($_SERVER) and see what happens. I did this (actually a var_dump) and $_SERVER['REQUEST_URI'] doesn't show up at all. See my message replying to Jochem. Thanks for your code. I'll check it out. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Capture the whole URL
Hey - - I must be missing something, but in a URL such as: diddly.com?id=fredtotal=goof $_SERVER['PHP-SELF'] gives me the diddley.com part. I want to capture the whole URL. The documentation makes it seem like $_SERVER['REQUEST_URI'] is supposed to do that, but I get an Undefined Index error. Do I have to enable this somehow? I realize that I could recreate the rest of the URL from $_GET's, but I'd rather not if I don't have to. PHP 5.1 Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Sessions working/not
Hey - -- - Would anyone be so kind as to un-stick my brain? I can't get sessions to work on my development machine (localhost). They work fine on my testing server (an internal IP). Development: W2K, Testing Server W2K Server, both using IIS 5, PHP 5.2. The php.ini SESSION settings are the same on both machines. Seems to me I made this choice at some point, but now my feeble brain can't bring it up. bueller Anyone? Anyone? /bueller Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Executing scripts from a table
On Feb 2, 2007, at 6:59 PM, Richard Lynch wrote: Putting PHP source into MySQL is the WRONG way to go for security and efficiency... Thank you, Richard -- I appreciate your advice. Here is a qualifier: I'm not putting any core code into tables, just code which generates page content. The access rights to that page content, as well as security code and application objects are not there. That code is off of the web path, called by functions. No SQL is in tables. So maybe I shouldn't have said security. With that in mind -- I would really appreciate it if would help me understand your comment or point me to a resource which will. I have read a bunch of stuff on security, but no resources led me to believe that I was on a wrong path, though none of them followed the path I am on. It isn't too late for me to change. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Executing scripts from a table
On Feb 3, 2007, at 9:32 AM, Ken Kixmoeller -- reply to [EMAIL PROTECTED] wrote: I'm not putting any core code into tables, just code which generates page content. The access rights to that page content, as well as security code and application objects are not there. That code is off of the web path, called by functions. No SQL is in tables. So maybe I shouldn't have said security. I should add: All of the PHP in the tables is making calls to UI objects and data objects (which contain the SQL). Those classes are also off of the web tree. My goal has been to locate any and all page- related content (HTML and PHP) in a single location. I am *not* trying to justify my strategy here. I just want to provide enough information to anybody willing to help me understand if it is ill-conceived. Thank you, Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Can a class instance a property of another class
Thanks to all -- got all of this working fine. Mostly my syntax was a bit off. Your examples helped me mend my ways. Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Executing scripts from a table
Hi, folks -- - - For security and efficiency, I am trying to store PHP scripts in MySQL tables. Only problem: I can't get them to execute. In a template: $php_code = $this-ApplicationObject-GetStoredCode($whichpage); echo $php_code; // doesn't execute print_r($php_code); // doesn't execute, either I've looked for some kind of exec_script() function without luck. I can't be the first one to have done this. Any ideas or resources you can point me to? Thank you -- - - Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Executing scripts from a table
Yeah, that was it. Thanks, Thomas. (dang it, I should have been able to figure out that myself!) Ken On Feb 2, 2007, at 11:32 AM, Thomas Pedoussaut wrote: Ken Kixmoeller -- reply to [EMAIL PROTECTED] wrote: Hi, folks -- - - For security and efficiency, I am trying to store PHP scripts in MySQL tables. Only problem: I can't get them to execute. In a template: $php_code = $this-ApplicationObject-GetStoredCode($whichpage); echo $php_code; // doesn't execute print_r($php_code); // doesn't execute, either I think you're thinking of eval() http://ie2.php.net/manual/en/function.eval.php It should do what you want. -- Thomas -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Can a class instance a property of another class
Thanks for your help, guys. I had to leave my office last evening before I had a chance to try any of them. I am sneaking in some office time today. I'll let you know (with complete scripts and error messages). Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Can a class instance a property of another class
OK, Jochem, I adapted your example and got it working. Thank you very
much.
I am still playing with it to better understand. One thing I don't
yet understand is the necessity for the getFoo()/getBar()
handshake, especially the getbar() in the BAR class. That doesn't
seem to serve any purpose. My adaptation us just a getDummy().
Do they just serve to pass the object by reference?
Ken
--
On Jan 26, 2007, at 5:47 PM, Jochem Maas wrote:
class Foo
{
private $var;
function __construct() { $this-var = foo; }
function getFoo() { return $this-var; }
}
class Bar
{
private $var;
private $foo;
function __construct() { $this-var = bar; $this-foo = new Foo; }
function getBar() { return $this-var; }
function speak() { echo I am ,$this-foo-getFoo(),$this-getBar
(),\n; }
}
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[PHP] Creating an array as a property of an object
Hello, folks -- lurking for a while, first post --
I'm relatively new to PHP but doing database design work for nearly
20 years.
I've RTFM'ed (+ books + other resources) a bunch of times but I have
a mental block around doing this:
I want to have an multidimensional array as a property of an object.
Example:
MySQL Resource:
WHAM_ID NAME AMOUNT
5 Fred 99
9 Albert 345
23 Mary 5
(etc...)
Inside the function which builds the instance of the object, I have
language like:
while ($line = mysql_fetch_array($result_set,MYSQL_ASSOC))
{
$this-foom_array = array(MyKey.$line[wham_id]=array($line).,;
}
This isn't even close. g
Any examples, or a well-written resource to help me do this?
TIA
Ken
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Re: [PHP] Creating an array as a property of an object
On Jan 26, 2007, at 3:08 PM, Robert Cummings wrote: $this-foom_array[$line['WHAM_ID']] = $line; Cheers, Rob. Thank you so much, Rob. That did it. (Kickin' the cobwebs out of my head...) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Can a class instance a property of another class
Hey - -- - Here I am again. Anybody still working on a Friday? I would like to have a class instance be the property of another class, like can be done in other languages. For example: I would like to have a Connections class which contains all of the database connection logic and query results. There are advantages to having this type of utility class be local to a data or business class. (I know that I could have a generic include with functions outside of the class hierarchy.) So, in the __construct method of a business or data class, for example, one could: include_once(connection_classes.kbk); $this-connection_class = new connection_class; This syntax fails, so I know this isn't right, but I hope you get the idea. Can it be done? TIA, again Ken -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
