Edit report at https://bugs.php.net/bug.php?id=70490&edit=1
ID: 70490
User updated by: webtech at mines-telecom dot fr
Reported by: webtech at mines-telecom dot fr
Summary: get_browser function is very slow
Status: Open
Type: Bug
Package: Performance problem
Operating System: OS X 10.11.1
PHP Version: 7.0.0RC7
Block user comment: N
Private report: N
New Comment:
Sorry, I've made a mistake :
- the result on the last comment "get_browser takes 1.1309630870819 sec" was with PHP
5.6.15
With PHP7.0RC7 :
get_browser takes 4.4257979393005 sec
The PHP browscap file is php_browscap.ini (size: 21664 kb)
Previous Comments:
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[2015-11-13 13:34:08] webtech at mines-telecom dot fr
It's better with RC7 : get_browser takes 1.1309630870819 sec
but it's not 40 ms ;)
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[2015-11-13 13:05:17] dev018 at am-horizon dot com
Hi, I have tested your code but every time it's not take more that 40ms. Could you please test
it again
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[2015-11-04 15:16:57] David dot Gausmann at measX dot com
Hello there,
I detected the get_browser command as the lack of performance on my website today. Then I've
found this bug here.
Could you please implement a hashmap or something similar for that command?
I cannot believe that searching through an ini file needs so much time.
You could for example split the search up and delegate it to multiple threads.
Here is my example:
<?php
$dTime1 = microtime(true);
$oBrowser = get_browser('Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101
Firefox/41.0');
$dTime2 = microtime(true);
$oBrowser2 = get_browser('DoesntExist');
$dTime3 = microtime(true);
echo sprintf('%.4f', $dTime2 - $dTime1), "<br>";
echo sprintf('%.4f', $dTime3 - $dTime2), "<br>";
?>
Searching for a non-existent entry still requires so much time like the regular search (> 1
second).
Kind Regards
David Gausmann
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[2015-09-21 15:26:21] webtech at mines-telecom dot fr
I'm using php_browscap.ini (16,301 KB), not the full one full_php_browscap.ini (33,714 KB).
I've upgraded to PHP7.0.0RC3 and it's the same.
Is it better to use the browscap-php library (https://github.com/browscap/browscap-php) as
recommended in http://browscap.org/ ?
I though it was better to use native PHP...
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[2015-09-19 09:20:58] yohgaki@php.net
I think you are using large browscap.ini. Although browscap.ini is cached in memory, the code
searching matched entry is not so fast. If database is large, it takes time. (About 2 sec with debug
build CLI server & Core i7 4770S using full_php_browscap.ini)
http://browscap.org/
Try lite_php_browscap.ini if you need performance.
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