Re: [PHP] What is faster?
I see your point about including the timing code in the calculation itself and while it does add time to the process, he is not just timing this code -- he is timing this code against another. Meaning we don't want to know How fast is this code? per se -- we want to know Which is faster? So, arguably from the faster point of view, as long as the time mech is in both tests, the question will be answered with a degree of certainty. From the days of my boyhood, even if the race route were two times around the big oak tree, the faster runner would still win the race. Question for you, please: In your post you say: time. For example, using something like ab will let you test your code in its raw form - without the timing and looping. What is ab? I am somewhat limited in my depth and scope of php and so I have never seen this before. Care to point me in a direction where I could learn more? Mark Cain - Original Message - From: Chris Shiflett [EMAIL PROTECTED] To: Mark Cain [EMAIL PROTECTED] Cc: Andy Pieters [EMAIL PROTECTED]; php-general@lists.php.net Sent: Sunday, June 05, 2005 9:56 PM Subject: Re: [PHP] What is faster? Mark Cain wrote: I checked the first expression with 1,000 iterations and it took 0.00745 seconds. Here is the code I used. [snip] $start1 = vsprintf('%d.%06d', gettimeofday()); Although many would argue that it's pointless to worry over such small details (and they have valid arguments), it's better to construct your benchmark so that the timing mechanism impacts your code as little as possible. Although consistency is difficult to achieve without some effort, you can at least get your timing mechanism out of the code that you want to time. For example, using something like ab will let you test your code in its raw form - without the timing and looping. I also dislike unit tests that are part of the code they're meant to test. :-) Hope that helps. Chris -- Chris Shiflett Brain Bulb, The PHP Consultancy http://brainbulb.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] What is faster?
Mark Cain wrote: I see your point about including the timing code in the calculation itself and while it does add time to the process, he is not just timing this code -- he is timing this code against another. Meaning we don't want to know How fast is this code? per se -- we want to know Which is faster? So, arguably from the faster point of view, as long as the time mech is in both tests, the question will be answered with a degree of certainty. From the days of my boyhood, even if the race route were two times around the big oak tree, the faster runner would still win the race. Question for you, please: In your post you say: time. For example, using something like ab will let you test your code in its raw form - without the timing and looping. What is ab? I am somewhat limited in my depth and scope of php and so I have never seen this before. Care to point me in a direction where I could learn more? apache benchmark, try: man ab on your local linux cmd line (assuming you have apache installed) Mark Cain - Original Message - From: Chris Shiflett [EMAIL PROTECTED] To: Mark Cain [EMAIL PROTECTED] Cc: Andy Pieters [EMAIL PROTECTED]; php-general@lists.php.net Sent: Sunday, June 05, 2005 9:56 PM Subject: Re: [PHP] What is faster? Mark Cain wrote: I checked the first expression with 1,000 iterations and it took 0.00745 seconds. Here is the code I used. [snip] $start1 = vsprintf('%d.%06d', gettimeofday()); Although many would argue that it's pointless to worry over such small details (and they have valid arguments), it's better to construct your benchmark so that the timing mechanism impacts your code as little as possible. Although consistency is difficult to achieve without some effort, you can at least get your timing mechanism out of the code that you want to time. For example, using something like ab will let you test your code in its raw form - without the timing and looping. I also dislike unit tests that are part of the code they're meant to test. :-) Hope that helps. Chris -- Chris Shiflett Brain Bulb, The PHP Consultancy http://brainbulb.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] What is faster?
Mark Cain wrote: I see your point about including the timing code in the calculation itself and while it does add time to the process, he is not just timing this code -- he is timing this code against another. Meaning we don't want to know How fast is this code? per se -- we want to know Which is faster? You want to also know which one parses faster -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] What is faster?
Hi all Of these two expressions, which one is faster? if(!(is_null($customMenu)) (is_array($customMenu))) $menu=$customMenu; else $menu=array('Documentation','Settings'); OR $menu=(!(is_null($customMenu)) (is_array($customMenu))?$customMenu:$menu); Anybody have any documentation on this? Kind regards Andy -- Registered Linux User Number 379093 -- --BEGIN GEEK CODE BLOCK- Version: 3.1 GAT/O/E$ d-(---)+ s:(+): a--(-)? C$(+++) UL$ P-(+)++ L+++$ E---(-)@ W++$ !N@ o? !K? W--(---) !O !M- V-- PS++(+++) PE--(-) Y+ PGP++(+++) t+(++) 5-- X++ R*(+)@ !tv b-() DI(+) D+(+++) G(+) e$@ h++(*) r--++ y--() -- ---END GEEK CODE BLOCK-- -- Check out these few php utilities that I released under the GPL2 and that are meant for use with a php cli binary: http://www.vlaamse-kern.com/sas/ -- -- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] What is faster?
I checked the first expression with 1,000 iterations and it took 0.00745 seconds. Here is the code I used. You can use it find the time for the second expression and any future which is faster queries you might have. This way you can create you own documentation. ? $start1 = vsprintf('%d.%06d', gettimeofday()); for($i=1;$i=1000;$i++){ if(!(is_null($customMenu)) (is_array($customMenu))) { $menu=$customMenu; } else { $menu=array('Documentation','Settings'); }; } $end1 = vsprintf('%d.%06d', gettimeofday()); $lapse1 = bcsub($end1,$start1,7); echo Start Time: . $start1 . BR . End Time: . $end1 . P . $lapse1; ? Mark Cain - Original Message - From: Andy Pieters [EMAIL PROTECTED] To: php-general@lists.php.net Sent: Sunday, June 05, 2005 12:24 PM Subject: [PHP] What is faster? Hi all Of these two expressions, which one is faster? if(!(is_null($customMenu)) (is_array($customMenu))) $menu=$customMenu; else $menu=array('Documentation','Settings'); OR $menu=(!(is_null($customMenu)) (is_array($customMenu))?$customMenu:$menu); Anybody have any documentation on this? Kind regards Andy -- Registered Linux User Number 379093 -- --BEGIN GEEK CODE BLOCK- Version: 3.1 GAT/O/E$ d-(---)+ s:(+): a--(-)? C$(+++) UL$ P-(+)++ L+++$ E---(-)@ W++$ !N@ o? !K? W--(---) !O !M- V-- PS++(+++) PE--(-) Y+ PGP++(+++) t+(++) 5-- X++ R*(+)@ !tv b-() DI(+) D+(+++) G(+) e$@ h++(*) r--++ y--() -- ---END GEEK CODE BLOCK-- -- Check out these few php utilities that I released under the GPL2 and that are meant for use with a php cli binary: http://www.vlaamse-kern.com/sas/ -- -- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] What is faster?
On Sun, 2005-06-05 at 12:24, Andy Pieters wrote: Hi all Of these two expressions, which one is faster? if(!(is_null($customMenu)) (is_array($customMenu))) $menu=$customMenu; else $menu=array('Documentation','Settings'); OR $menu=(!(is_null($customMenu)) (is_array($customMenu))?$customMenu:$menu); Anybody have any documentation on this? I didn't bother checking for you but I do know that: $customMenu !== null Is about 3 or 4 times faster than !is_null( $customMenu ) Function calls are always much slower than operators. Cheers, Rob. -- .. | InterJinn Application Framework - http://www.interjinn.com | :: | An application and templating framework for PHP. Boasting | | a powerful, scalable system for accessing system services | | such as forms, properties, sessions, and caches. InterJinn | | also provides an extremely flexible architecture for | | creating re-usable components quickly and easily. | `' -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] What is faster?
Mark Cain wrote: I checked the first expression with 1,000 iterations and it took 0.00745 seconds. Here is the code I used. [snip] $start1 = vsprintf('%d.%06d', gettimeofday()); Although many would argue that it's pointless to worry over such small details (and they have valid arguments), it's better to construct your benchmark so that the timing mechanism impacts your code as little as possible. Although consistency is difficult to achieve without some effort, you can at least get your timing mechanism out of the code that you want to time. For example, using something like ab will let you test your code in its raw form - without the timing and looping. I also dislike unit tests that are part of the code they're meant to test. :-) Hope that helps. Chris -- Chris Shiflett Brain Bulb, The PHP Consultancy http://brainbulb.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php