Re: PHP 4.0 Bug #6608: sizeof($array) extremly slow in loop. 90% cpu util

From: Date: Thu, 07 Sep 2000 17:04:58 +0000
Subject: Re: PHP 4.0 Bug #6608: sizeof($array) extremly slow in loop. 90% cpu util
References: 1  Groups: php.dev 
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Can you supply a full reproducing script (including the array, etc)? Zeev On 7 Sep 2000 mledet@spirenet.com wrote: > From: mledet@spirenet.com > Operating system: Linux 2.2.16 > PHP version: 4.0.2 > PHP Bug Type: Arrays related > Bug description: sizeof($array) extremly slow in loop. 90% cpu util > > The following code performed well under 3.0.16. > for ($i=0; $i < sizeof($teacherarray); $i++) { > $a=$teacher_array[$i]; > if ($a->teacher_id==$teacher_id) { > break; > } > } > However, under php 4.0.2 it is extrememly slow and causes cpu util for the httpd process to hit > 90%. $teacherarray is not being modified during the loop so the condition isn't changing. > > BTW: Changing to the following code works ok. > > $numteachers = sizeof($teacherarray); > for ($i=0; $i < $numteachers; $i++) { > $a=$teacher_array[$i]; > if ($a->teacher_id==$teacher_id) { > break; > } > } > > Either the sizeof function has had a serious decrease in its speed or something is awry.. > > > > -- Zeev Suraski <zeev@zend.com> http://www.zend.com/

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