php-general Digest 3 Apr 2012 06:13:26 -0000 Issue 7758
php-general Digest 3 Apr 2012 06:13:26 - Issue 7758
Topics (messages 317428 through 317435):
Re: Thinking out loud - a continuation...
317428 by: Jay Blanchard
317429 by: Matijn Woudt
317430 by: Robert Cummings
Re: Could apc_fetch return a pointer to data in shared memory ?
317431 by: Stuart Dallas
317435 by: Simon
Re: Variable representation
317432 by: tamouse mailing lists
Adding Rows In PHPMYADMIN
317433 by: Karl James
317434 by: Tommy Pham
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---BeginMessage---
[snip]
function getTiersJson( $company )
{
$tiers = getTiers( $company );
$json = JSON_encode( $tiers );
}
$tiersJson = getTiersJson( 1 );
?
This will output JSON with the following structure:
[/snip]
OK, now I know I am being dense - but don't I have to add return $json; to
getTiersJson() ?---End Message---
---BeginMessage---
On Mon, Apr 2, 2012 at 10:36 PM, Jay Blanchard
jay.blanch...@sigmaphinothing.org wrote:
[snip]
function getTiersJson( $company )
{
$tiers = getTiers( $company );
$json = JSON_encode( $tiers );
}
$tiersJson = getTiersJson( 1 );
?
This will output JSON with the following structure:
[/snip]
OK, now I know I am being dense - but don't I have to add return $json; to
getTiersJson() ?
Of course ;)
---End Message---
---BeginMessage---
On 12-04-02 04:36 PM, Jay Blanchard wrote:
[snip]
function getTiersJson( $company )
{
$tiers = getTiers( $company );
$json = JSON_encode( $tiers );
}
$tiersJson = getTiersJson( 1 );
?
This will output JSON with the following structure:
[/snip]
OK, now I know I am being dense - but don't I have to add return $json; to
getTiersJson() ?
yeah, *lol* in my testing I had a print_r() in the getTiersJson() so
didn't notice I wasn't returning since I didn't do anything with the
captured value (null without a proper return).
Cheers,
Rob.
--
E-Mail Disclaimer: Information contained in this message and any
attached documents is considered confidential and legally protected.
This message is intended solely for the addressee(s). Disclosure,
copying, and distribution are prohibited unless authorized.
---End Message---
---BeginMessage---
On 2 Apr 2012, at 15:37, Simon wrote:
On 2 April 2012 14:27, Stuart Dallas stu...@3ft9.com wrote:
On 2 Apr 2012, at 14:12, Simon wrote:
Thanks Maciek
On 2 April 2012 10:37, Maciek Sokolewicz
maciek.sokolew...@gmail.comwrote:
On 02-04-2012 10:12, Simon wrote:
Thanks Simon. you got my hopes up there for a second.
From the php docs page:
Critics further argue that it is pointless to use a Singleton in a Shared
Nothing Architecture like PHP where objects are uniquewithin the Request
only anyways.
I want the the singleton class to be global to the entire application (ie
shared by reference across all requests). I'd agree with the above
critics that if you have to instantiate your singleton for each request,
it's rather pointless.
Well, that's simply not possible due to the shared nothing paradigm.
If you want to share, you need to either share it via another medium (such
as a database, as has been suggested a dozen times already) or switch to a
different language.
PHP is based on this paradigm, and you should not expect of it to violate
it just because you want to do things a certain way, which is not the PHP
way.
The existence of memcached, shm and apc_fetch tell me that PHP already
accepts the need for sharing data between processes. All I'm arguing for is
the ability to share the data by reference rather than by copy.
As already mentioned several times the closest you will get is shared memory
(as used by APC), but you can't access that by reference because shared
read/write resources need controlled access for stability.
I know. I understand that (and the issues with locking that might arise if
truly shared memory was available).
I can't find any material that explains how the .net framework implements
application variables. You mentioned earlier that you *know* that when you
access them you do so by reference. Do you have a source for this knowledge
or is it some sort of sixth sense?
Source: 10+ years as an ASP and ASP.NET developer.
Wow. As knowledge goes that's up there with I believe it therefore it is.
Having looked for documentation, I agree, it's utterly terrible. It's as if
even Microsoft themselves don't fully understand the advantages that
application variables give them over the competition. (Though they're hardly
likely to be forthcoming about helping others implement similar features).
php-general Digest 3 Apr 2012 19:16:36 -0000 Issue 7759
php-general Digest 3 Apr 2012 19:16:36 - Issue 7759 Topics (messages 317436 through 317437): Re: learning resources for PHP 317436 by: Daniel Brown Re: Node.PHP 317437 by: Joseph Moniz Administrivia: To subscribe to the digest, e-mail: php-general-digest-subscr...@lists.php.net To unsubscribe from the digest, e-mail: php-general-digest-unsubscr...@lists.php.net To post to the list, e-mail: php-gene...@lists.php.net -- ---BeginMessage--- On Mon, Apr 2, 2012 at 23:53, Tim Dunphy bluethu...@gmail.com wrote: Hello list, I am quite sure that you've heard this question at least a few times before. :) But I have been dabbling a bit in PHP for years and I've decided that its' high time that became serious about getting a solid grounding in it. Currently I work as a Sysadmin and have modest but reliable skills in bash and perl. But I consider PHP more of an artform and I really need to 'pick up a brush and start painting' so to speak. So what I was wondering what websites, and books you'd recommend to someone who (for all intents and purpose) is just starting out. On my hit list of things to learn are basic php / database interaction (mysql mainly).. then how to accelerate php interraction through memcache.. and eventually one I have all that down onto using some of the NoSQLs (mongo/cassandra/membase, etc). Thanks! -tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B Your question is better asked (and will certainly be better answered) on the general list at php-gene...@lists.php.net, Tim, and I've CC'd the list for you. If you haven't already, please subscribe to that list to ensure you receive all the responses. -- /Daniel P. Brown Network Infrastructure Manager http://www.php.net/ ---End Message--- ---BeginMessage--- On Fri, Mar 30, 2012 at 5:56 PM, German Geek geek...@gmail.com wrote: Maybe stupid question, but is node.php really necessary? If you can program PHP and it performs better than node.js, why would you need to have another wrapper around things. Why not just program normal PHP? This is normal PHP in the same sense that node.js is normal javascript, python-tornado is normal python and ruby-event-machine is normal ruby. The only difference as stated by micheal was the async IO. On Fri, Mar 30, 2012 at 6:33 PM, Michael Save savetheinter...@omegasdg.com wrote: Also, I kind of doubt you can outperform node.js with standard PHP. On Sat, Mar 31, 2012 at 9:37 AM, Daniel Brown danbr...@php.net wrote: On Fri, Mar 30, 2012 at 21:33, Michael Save savetheinter...@omegasdg.com 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. This has been an on the side just for fun project for me mostly and as such i originally had the same performance assumptions as stated in this thread. Basically i was writing this to get familar with php internals and to understand what goes into designing such a system. You can imagine my surprise when i ran bench marks against the example server against an equivelant node.js http server and the node.php implementation was able to respond to twice as many requests per second (14k req/s) then node.js could (7k req/s). Though i would take this with a grain of salt as the benchmark is largely unfair seeing how node.js is much more feature complete and hardend from production use. Never the less, i was absolutely shocked that this completely unoptomized and memory leaky node.php implementation i hacked together in one night was able to run circles around node.js in naive benchmarks. So i was absolutely confused to the performance boost with php so i started poking around asking people in various freenode channels if they had any hypothesis on why node.php was able to perform against node.js. I stumbled across a similar project to create a node.lua implemantation called luvit ( http://www.luvit.io ) and it also boasted the same exact performance boost vs node.js, thats is luvit was able to do 2x the requests as node.js in the same amount of time. From my exploration on nodes 1/2x performance vs node.php and luvit (node.lua) it turns out that V8 is fast only when it has to stay in JS mode. The problem with node like systems is the JS to native code boundary must be crossed several times to perform IO. So nodejs-core get's some of it's best performance boosts from reducing the amount of times JS has to call out to C++. The unfortunate detail is that node.js like systems get their power from doing lots of IO and every IO operation has to call out to C/C++ so node.js performance really drags around this gotcha in V8. I hold out some hope for
Re: [PHP] Could apc_fetch return a pointer to data in shared memory ?
On 2 April 2012 22:25, Stuart Dallas stu...@3ft9.com wrote: On 2 Apr 2012, at 15:37, Simon wrote: On 2 April 2012 14:27, Stuart Dallas stu...@3ft9.com wrote: On 2 Apr 2012, at 14:12, Simon wrote: Thanks Maciek On 2 April 2012 10:37, Maciek Sokolewicz maciek.sokolew...@gmail.com wrote: On 02-04-2012 10:12, Simon wrote: Thanks Simon. you got my hopes up there for a second. From the php docs page: Critics further argue that it is pointless to use a Singleton in a Shared Nothing Architecture like PHP where objects are uniquewithin the Request only anyways. I want the the singleton class to be global to the entire application (ie shared by reference across all requests). I'd agree with the above critics that if you have to instantiate your singleton for each request, it's rather pointless. Well, that's simply not possible due to the shared nothing paradigm. If you want to share, you need to either share it via another medium (such as a database, as has been suggested a dozen times already) or switch to a different language. PHP is based on this paradigm, and you should not expect of it to violate it just because you want to do things a certain way, which is not the PHP way. The existence of memcached, shm and apc_fetch tell me that PHP already accepts the need for sharing data between processes. All I'm arguing for is the ability to share the data by reference rather than by copy. As already mentioned several times the closest you will get is shared memory (as used by APC), but you can't access that by reference because shared read/write resources need controlled access for stability. I know. I understand that (and the issues with locking that might arise if truly shared memory was available). I can't find any material that explains how the .net framework implements application variables. You mentioned earlier that you *know* that when you access them you do so by reference. Do you have a source for this knowledge or is it some sort of sixth sense? Source: 10+ years as an ASP and ASP.NET developer. Wow. As knowledge goes that's up there with I believe it therefore it is. I don't understand your point. Having looked for documentation, I agree, it's utterly terrible. It's as if even Microsoft themselves don't fully understand the advantages that application variables give them over the competition. (Though they're hardly likely to be forthcoming about helping others implement similar features). Here's some stuff I did find: http://www.codeproject.com/Articles/87316/A-walkthrough-to-Application-State#e This article explains basically how application variables work. It doesn't specifically mention passing by reference but it discusses thread safety at some length so you might infer that implies passing by reference. can cause performance overhead if it is heavy You certainly have to be careful how you use it (as you do any tool). | And you want to store petabytes of data in there. Smart. No, I want to store 50 - 200Mb. At some point in the somewhat distant future I can imagine larger amounts of shared storage between required. Up to and including petabytes of data when such large amounts of RAM become practical. This does not have to cause overhead. The author was suggesting caution to protect people who aren't sure what they're doing. This can be done with no performance overhead (so long as you have the physical RAM). Anyway, that page says nothing about whether it's accessed by reference. It implies that writes are atomic, which in turn implies that there is something in the background controlling write access to the data. As for reading the data being done via references there is nothing in that article to suggest that. http://msdn.microsoft.com/en-us/library/ff650849.aspx Here is a more technical discussion about the singleton class is implemented in .NET. Application variables are provided by an instance of a singleton class (the HttpApplication class). Looks no different to the way you'd implement a singleton in PHP (as expected - as a concept it doesn't generally change between languages). Just because the HttpApplication class is a singleton doesn't mean that when you request data from it you get it by reference. Could we just for the sake of argument, just accept that it does actually pass by reference between threads, but not between processes ? It does - is that really so hard to believe ? http://stackoverflow.com/questions/1132373/do-asp-net-application-variables-pass-by-reference-or-value Stack overflow question from someone actually wanting to get a *copy* of an application variable rather than a reference. According to that page scalar values are returned by value, objects are returned as a copy of the reference. Based on that, it would appear that you are correct as far as objects
[PHP] Re: learning resources for PHP
On Mon, Apr 2, 2012 at 23:53, Tim Dunphy bluethu...@gmail.com wrote: Hello list, I am quite sure that you've heard this question at least a few times before. :) But I have been dabbling a bit in PHP for years and I've decided that its' high time that became serious about getting a solid grounding in it. Currently I work as a Sysadmin and have modest but reliable skills in bash and perl. But I consider PHP more of an artform and I really need to 'pick up a brush and start painting' so to speak. So what I was wondering what websites, and books you'd recommend to someone who (for all intents and purpose) is just starting out. On my hit list of things to learn are basic php / database interaction (mysql mainly).. then how to accelerate php interraction through memcache.. and eventually one I have all that down onto using some of the NoSQLs (mongo/cassandra/membase, etc). Thanks! -tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B Your question is better asked (and will certainly be better answered) on the general list at php-general@lists.php.net, Tim, and I've CC'd the list for you. If you haven't already, please subscribe to that list to ensure you receive all the responses. -- /Daniel P. Brown 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] Node.PHP
On Fri, Mar 30, 2012 at 5:56 PM, German Geek geek...@gmail.com wrote: Maybe stupid question, but is node.php really necessary? If you can program PHP and it performs better than node.js, why would you need to have another wrapper around things. Why not just program normal PHP? This is normal PHP in the same sense that node.js is normal javascript, python-tornado is normal python and ruby-event-machine is normal ruby. The only difference as stated by micheal was the async IO. On Fri, Mar 30, 2012 at 6:33 PM, Michael Save savetheinter...@omegasdg.com wrote: Also, I kind of doubt you can outperform node.js with standard PHP. On Sat, Mar 31, 2012 at 9:37 AM, Daniel Brown danbr...@php.net wrote: On Fri, Mar 30, 2012 at 21:33, Michael Save savetheinter...@omegasdg.com 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. This has been an on the side just for fun project for me mostly and as such i originally had the same performance assumptions as stated in this thread. Basically i was writing this to get familar with php internals and to understand what goes into designing such a system. You can imagine my surprise when i ran bench marks against the example server against an equivelant node.js http server and the node.php implementation was able to respond to twice as many requests per second (14k req/s) then node.js could (7k req/s). Though i would take this with a grain of salt as the benchmark is largely unfair seeing how node.js is much more feature complete and hardend from production use. Never the less, i was absolutely shocked that this completely unoptomized and memory leaky node.php implementation i hacked together in one night was able to run circles around node.js in naive benchmarks. So i was absolutely confused to the performance boost with php so i started poking around asking people in various freenode channels if they had any hypothesis on why node.php was able to perform against node.js. I stumbled across a similar project to create a node.lua implemantation called luvit ( http://www.luvit.io ) and it also boasted the same exact performance boost vs node.js, thats is luvit was able to do 2x the requests as node.js in the same amount of time. From my exploration on nodes 1/2x performance vs node.php and luvit (node.lua) it turns out that V8 is fast only when it has to stay in JS mode. The problem with node like systems is the JS to native code boundary must be crossed several times to perform IO. So nodejs-core get's some of it's best performance boosts from reducing the amount of times JS has to call out to C++. The unfortunate detail is that node.js like systems get their power from doing lots of IO and every IO operation has to call out to C/C++ so node.js performance really drags around this gotcha in V8. I hold out some hope for native PHP performance tough. If some one were to invest the time into making a solid JIT based interpreter for PHP i'm fairly confident based on language characteristics and the performance characteristics associated with them that a PHP-JIT implementation would be able to leave V8 in the dust. Mostly due to explicit lexical scoping in PHP that would offset the Hidden-Class overhead of V8. In terms of PHP-JITs Facebook has already done some initial work on such a VM, they call it, not surprisingly, hip-hop-virtual-machine ( http://www.facebook.com/note.php?note_id=10150415177928920 ) and it already doing almost no optimizations is closer to performance of compiled PHP via hiphop then it is to interpreted PHP via the de facto interpreter. - Joseph Moniz 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. -- /Daniel P. Brown 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] Node.PHP
*bad link in last post http://luvit.io/ -Joseph Moniz On Tue, Apr 3, 2012 at 12:16 PM, Joseph Moniz joseph.mo...@gmail.com wrote: On Fri, Mar 30, 2012 at 5:56 PM, German Geek geek...@gmail.com wrote: Maybe stupid question, but is node.php really necessary? If you can program PHP and it performs better than node.js, why would you need to have another wrapper around things. Why not just program normal PHP? This is normal PHP in the same sense that node.js is normal javascript, python-tornado is normal python and ruby-event-machine is normal ruby. The only difference as stated by micheal was the async IO. On Fri, Mar 30, 2012 at 6:33 PM, Michael Save savetheinter...@omegasdg.com wrote: Also, I kind of doubt you can outperform node.js with standard PHP. On Sat, Mar 31, 2012 at 9:37 AM, Daniel Brown danbr...@php.net wrote: On Fri, Mar 30, 2012 at 21:33, Michael Save savetheinter...@omegasdg.com 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. This has been an on the side just for fun project for me mostly and as such i originally had the same performance assumptions as stated in this thread. Basically i was writing this to get familar with php internals and to understand what goes into designing such a system. You can imagine my surprise when i ran bench marks against the example server against an equivelant node.js http server and the node.php implementation was able to respond to twice as many requests per second (14k req/s) then node.js could (7k req/s). Though i would take this with a grain of salt as the benchmark is largely unfair seeing how node.js is much more feature complete and hardend from production use. Never the less, i was absolutely shocked that this completely unoptomized and memory leaky node.php implementation i hacked together in one night was able to run circles around node.js in naive benchmarks. So i was absolutely confused to the performance boost with php so i started poking around asking people in various freenode channels if they had any hypothesis on why node.php was able to perform against node.js. I stumbled across a similar project to create a node.lua implemantation called luvit ( http://www.luvit.io ) and it also boasted the same exact performance boost vs node.js, thats is luvit was able to do 2x the requests as node.js in the same amount of time. From my exploration on nodes 1/2x performance vs node.php and luvit (node.lua) it turns out that V8 is fast only when it has to stay in JS mode. The problem with node like systems is the JS to native code boundary must be crossed several times to perform IO. So nodejs-core get's some of it's best performance boosts from reducing the amount of times JS has to call out to C++. The unfortunate detail is that node.js like systems get their power from doing lots of IO and every IO operation has to call out to C/C++ so node.js performance really drags around this gotcha in V8. I hold out some hope for native PHP performance tough. If some one were to invest the time into making a solid JIT based interpreter for PHP i'm fairly confident based on language characteristics and the performance characteristics associated with them that a PHP-JIT implementation would be able to leave V8 in the dust. Mostly due to explicit lexical scoping in PHP that would offset the Hidden-Class overhead of V8. In terms of PHP-JITs Facebook has already done some initial work on such a VM, they call it, not surprisingly, hip-hop-virtual-machine ( http://www.facebook.com/note.php?note_id=10150415177928920 ) and it already doing almost no optimizations is closer to performance of compiled PHP via hiphop then it is to interpreted PHP via the de facto interpreter. - Joseph Moniz 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. -- /Daniel P. Brown Network Infrastructure Manager http://www.php.net/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] To ? or not to ?
Hi gang: Let me start a religious war -- should one end their scripts with ? or not? After years of never having a problem with ending any of my scripts with ?, I found that several students in my class had scripts that did not produce the desired result even after they were given the scripts via highlight_file() to cut and paste. As it turned out, several students copy/pasted the script with an addition whitespace after the ending ? and as such the scripts did not run as expected. You see, the scripts created image but apparently the image delivery method objected to the additional whitespace. Does anyone have more examples of where scripts will fail IF they end with ? (note the additional space)? Cheers, tedd _ tedd.sperl...@gmail.com http://sperling.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] To ? or not to ?
On 3 Apr 2012, at 22:29, Tedd Sperling wrote: Let me start a religious war -- should one end their scripts with ? or not? After years of never having a problem with ending any of my scripts with ?, I found that several students in my class had scripts that did not produce the desired result even after they were given the scripts via highlight_file() to cut and paste. As it turned out, several students copy/pasted the script with an addition whitespace after the ending ? and as such the scripts did not run as expected. You see, the scripts created image but apparently the image delivery method objected to the additional whitespace. Does anyone have more examples of where scripts will fail IF they end with ? (note the additional space)? Usually when setting headers after such a script has been included when output buffering is turned off. Personally I never put the closing ? in if it's at the end of the file because it's unnecessary and can cause issues if it's present, but it's personal preference more than anything else. Ultimately you have to consider that there's a reason it's optional - things like that don't generally happen by accident. I remember Rasmus commenting on this style issue a few years back so a search of the archives should find an official position. -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] To ? or not to ?
On Apr 3, 2012, at 2:29 PM, Tedd Sperling wrote: Hi gang: Let me start a religious war -- should one end their scripts with ? or not? After years of never having a problem with ending any of my scripts with ?, I found that several students in my class had scripts that did not produce the desired result even after they were given the scripts via highlight_file() to cut and paste. As it turned out, several students copy/pasted the script with an addition whitespace after the ending ? and as such the scripts did not run as expected. You see, the scripts created image but apparently the image delivery method objected to the additional whitespace. Does anyone have more examples of where scripts will fail IF they end with ? (note the additional space)? Cheers, tedd I believe this can also be problematic if script A ends with ? (with additional space) and script B includes script A at the top, which will cause the headers to be sent. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] To ? or not to ?
On 12-04-03 05:29 PM, Tedd Sperling wrote: Hi gang: Let me start a religious war -- should one end their scripts with ? or not? After years of never having a problem with ending any of my scripts with ?, I found that several students in my class had scripts that did not produce the desired result even after they were given the scripts via highlight_file() to cut and paste. As it turned out, several students copy/pasted the script with an addition whitespace after the ending ? and as such the scripts did not run as expected. You see, the scripts created image but apparently the image delivery method objected to the additional whitespace. Does anyone have more examples of where scripts will fail IF they end with ? (note the additional space)? It's standard practice to NOT include the closing ? on anything remotely resembling a class or lib source file. As has been mentioned on this list and originally on PHP internals on several occasions, the optionality of the closing tag is intentional :) Cheers, Rob. -- E-Mail Disclaimer: Information contained in this message and any attached documents is considered confidential and legally protected. This message is intended solely for the addressee(s). Disclosure, copying, and distribution are prohibited unless authorized. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] To ? or not to ?
I leave them off of any non-view PHP file. It doesn't have any downsides, and leaving them in can cause problems. Just like short tags! Regards, –Josh Joshua Kehn | @joshkehn http://joshuakehn.com On Apr 3, 2012, at 5:29 PM, Tedd Sperling wrote: Hi gang: Let me start a religious war -- should one end their scripts with ? or not? After years of never having a problem with ending any of my scripts with ?, I found that several students in my class had scripts that did not produce the desired result even after they were given the scripts via highlight_file() to cut and paste. As it turned out, several students copy/pasted the script with an addition whitespace after the ending ? and as such the scripts did not run as expected. You see, the scripts created image but apparently the image delivery method objected to the additional whitespace. Does anyone have more examples of where scripts will fail IF they end with ? (note the additional space)? Cheers, tedd _ tedd.sperl...@gmail.com http://sperling.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: To ? or not to ?
On Tue, 3 Apr 2012 17:29:33 -0400, Tedd Sperling wrote: [...] Does anyone have more examples of where scripts will fail IF they end with ? (note the additional space)? +1 on everyone's call to omit on an included file due to the potential for sending headers. [... rearranged for ease of reply ...] You see, the scripts created image but apparently the image delivery method objected to the additional whitespace. If you're sending binary data, you're best throwing in an exit() after the last output. It doesn't matter then whether or not you have a closing ?, with or without additional white space. -- Ross McKay, Toronto, NSW Australia The chief cause of problems is solutions -Eric Sevareid -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] learning resources for PHP
Hello list, I am quite sure that you've heard this question at least a few times before. :) But I have been dabbling a bit in PHP for years and I've decided that its' high time that became serious about getting a solid grounding in it. Currently I work as a Sysadmin and have modest but reliable skills in bash and perl. But I consider PHP more of an artform and I really need to 'pick up a brush and start painting' so to speak. So what I was wondering what websites, and books you'd recommend to someone who (for all intents and purpose) is just starting out. On my hit list of things to learn are basic php / database interaction (mysql mainly).. then how to accelerate php interraction through memcache.. and eventually one I have all that down onto using some of the NoSQLs (mongo/cassandra/membase, etc). Thanks! -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] To ? or not to ?
Stuart Dallas wrote: [snip] Usually when setting headers after such a script has been included when output buffering is turned off. Personally I never put the closing ? in if it's at the end of the file because it's unnecessary and can cause issues if it's present, but it's personal preference more than anything else. Ultimately you have to consider that there's a reason it's optional - things like that don't generally happen by accident. I remember Rasmus commenting on this style issue a few years back so a search of the archives should find an official position. -Stuart Could using ob_start and ob_end_flush eliminate the ambiguity of whether or not to use '?'? Donovan -- D Brooke -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] To ? or not to ?
On 12-04-03 11:39 PM, Donovan Brooke wrote: Stuart Dallas wrote: [snip] Usually when setting headers after such a script has been included when output buffering is turned off. Personally I never put the closing ? in if it's at the end of the file because it's unnecessary and can cause issues if it's present, but it's personal preference more than anything else. Ultimately you have to consider that there's a reason it's optional - things like that don't generally happen by accident. I remember Rasmus commenting on this style issue a few years back so a search of the archives should find an official position. -Stuart Could using ob_start and ob_end_flush eliminate the ambiguity of whether or not to use '?'? In the generally recommended case of don't use them at the end of your file... where's the ambiguity? Cheers, Rob. -- E-Mail Disclaimer: Information contained in this message and any attached documents is considered confidential and legally protected. This message is intended solely for the addressee(s). Disclosure, copying, and distribution are prohibited unless authorized. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] To ? or not to ?
Robert Cummings wrote: [snip] Could using ob_start and ob_end_flush eliminate the ambiguity of whether or not to use '?'? In the generally recommended case of don't use them at the end of your file... where's the ambiguity? http://www.php.net/manual/en/function.include.php http://www.php.net/manual/en/language.basic-syntax.phpmode.php Those seem to suggest to use them... thus the ambiguity. Donovan -- D Brooke -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] To ? or not to ?
I keep my closing tag. Earlier I started removing closing tag. Then I search for the standardness of this practice and found its not standard. Some frameworks/cms intentionally do this. Besides a signle `\n` character is allowed after the closing tag which does not cause Can not send Header error. So I started using closing tag again. Later I found, from visual aspect, a closing tag makes the code balanced. Still using it. -- Shiplu.Mokadd.im ImgSign.com | A dynamic signature machine Innovation distinguishes between follower and leader
[PHP] RSS Standardness
Dealing RSS Version. I am going to write an RSS parser. Its a very simple parser which just grabs the latest items date and title. SimpleXML and DomDocument is my friend here. The problem here is there are too many standards for RSS. RSS 2.0, 0.92 and 0.91. What do you think which version should I implement? if its not a single version then which versions? I am also aware about SimplePie which I have been using a lot. Here my preference is not to load a library like SimplePie to just grab the title and date. I just want to use DomDocument and SimpleXML. Content-Type header. RSS were called RDF prior to 0.91 and currently RDF is a different protocol. How do you detect if the content is RSS 0.90 or Modern RDF if content-type header is 'Application/rdf+xml'. Other content type with same meaning is 'Application/rdf' and 'text/rdf'. -- Shiplu.Mokadd.im ImgSign.com | A dynamic signature machine Innovation distinguishes between follower and leader
