From: benji at daystream dot com
Operating system: OSX
PHP version: 4.3.0
PHP Bug Type: Performance problem
Bug description: sizeof($array) in loop is very slow
This issue was opened previously and closed without resolution two and a
half years ago due to lack of feedback in bug #6608. I made a comment
there but I'm not sure if closed topics are seen, so I'm opening it here.
I apologize if I shouldnt have opened a new bug report.
I'm running on OSX with PHP 4.3.0. The performance with a large array that
uses sizeof() in a loop is very poor. It's abut 50X slower than it should
be.
The following takes 8-10 seconds:
for ($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.
--
Edit bug report at http://bugs.php.net/?id=22492&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=22492&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=22492&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=22492&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=22492&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=22492&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=22492&r=support
Expected behavior: http://bugs.php.net/fix.php?id=22492&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=22492&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=22492&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=22492&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=22492&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=22492&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=22492&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=22492&r=gnused
