Re: PHP 4.0 Bug #7113: count and pointers

From: Date: Thu, 12 Oct 2000 11:02:12 +0000
Subject: Re: PHP 4.0 Bug #7113: count and pointers
References: 1  Groups: php.dev 
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I tried this .. however I assigned $blah to &$DATA and did a count($blah); The difference is about one second.. (granted, still to much..) Bear in mind that your code doesn't make sense. I don't see why this is such a problem for you. -- CaPS On Tue, 10 Oct 2000, Wico de Leeuw wrote: > At 02:35 10-10-00 -0700, Lars Torben Wilson wrote: > >wico@cnh.nl writes: > > > From: wico@cnh.nl > > > Operating system: linux > > > PHP version: 4.0 Latest CVS (10/10/2000) > > > PHP Bug Type: Performance problem > > > Bug description: count and pointers > > > > > > Hiya > > > > > > $ADLIB_FILE is a file, size = 9mb > > > > > > $ADLIB_DATA = file($ADLIB_FILE); > > > $ADLIB_COUNT = count($ADLIB_DATA); > > > echo time() - $test . " seconden<BR>\n\n"; > > > die(); > > > > > > takes 17 secs > > > > > > $ADLIB_DATA = file($ADLIB_FILE); > > > $ADLIB_COUNT = count(&$ADLIB_DATA); > > > echo time() - $test . " seconden<BR>\n\n"; > > > die(); > > > this takes 27 secs? > > > > > > shouldn't this be faster the the first one? > > > > > > Greetz, > > > > > > Wico > > > >I just tried this with a 10MB text file and the following functions, > >running each one 5 times: > > > >$file = file('/home/torben/INBOX'); > > > >function with_ref() { > > global $file; > > $count = count(&$file); > > echo "$count<br>\n"; > >} > > > >function without_ref() { > > global $file; > > $count = count($file); > > echo "$count<br>\n"; > >} > > > >The first one runs 5 times in 0.00146 seconds; the second takes 9.0146 > >seconds to run 5 times. This is with the latest CVS. > > I guess this explains that something is really wrong > > >Perhaps there is something in the file loading itself that is causing > >the problem? For instance, when I was testing this just now, I had to > >abort one run, which left an httpd running full-bore and eating > >massive megabytes--then I ran another test, and my numbers went all > >screwy, since the earlier invocation hadn't hit its 30-second limit > >and was still either loading or counting. I had to restart Apache to > >get things evened out--could something similar be happening to you? > > My apache uses 60 meg when loading a file into an array this is the normal > behavior of large array > Some thime ago i submited a bug report about array overhead being very big > > I did my test about 10 times with and without the pointer > With pointer is just verry slow without you won;t even notice is doing > something with the array > is just guess the somthing wrong with my or phps logic about pointers > > Greetz, > > Wico > > > >-- > >+----------------------------------------------------------------+ > >|Torben Wilson <torben@php.net> Netmill iTech| > >|http://www.coastnet.com/~torben > >http://www.netmill.fi| > >|Ph: 1 250 383-9735 torben@netmill.fi| > >+----------------------------------------------------------------+ > > > -- > PHP Development Mailing List <http://www.php.net/> > To unsubscribe, e-mail: php-dev-unsubscribe@lists.php.net > For additional commands, e-mail: php-dev-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net > >

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