#22492 [Opn->Dup]: sizeof($array) in loop is very slow
| From: | gschlossnagle@php.net | Date: | Sat, 01 Mar 2003 19:09:39 +0000 |
| Subject: | #22492 [Opn->Dup]: sizeof($array) in loop is very slow | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-34589@lists.php.net to get a copy of this message | ||
ID: 22492
Updated by: gschlossnagle@php.net
Reported By: benji at daystream dot com
-Status: Open
+Status: Duplicate
Bug Type: Performance problem
Operating System: OSX
PHP Version: 4.3.0
New Comment:
I haven't reopened you previous bug due to the fact that
you dont have a replicateable testcase and my testcase
doesn't reproduce anything close to your result. This
should be tracked in 6608 (which I just posted to).
Previous Comments:
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[2003-03-01 13:02:12] benji at daystream dot com
This issue was opened previously and closed without resolution two and
a half years ago due to lack of feedback in bug #6608. I made a comment
there but I'm not sure if closed topics are seen, so I'm opening it
here. I apologize if I shouldnt have opened a new bug report.
I'm running on OSX with PHP 4.3.0. The performance with a large array
that uses sizeof() in a loop is very poor. It's abut 50X slower than it
should be.
The following takes 8-10 seconds:
for ($i=1;$i<=sizeof($spell);$i++) {
$sentence=str_replace($spell[$i][0],$spell[$i][1],$sentence);
}
Whereas the following takes only .18 seconds:
$end=sizeof($spell);
for ($i=1;$i<=$end;$i++) {
$sentence=str_replace($spell[$i][0],$spell[$i][1],$sentence);
}
Other notes that might help: the array is stored in a file accessed by
require_once(), and the loop is in a function that brings $spell in as
a global variable.
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Edit this bug report at http://bugs.php.net/?id=22492&edit=1