Author: 芳草苑主

I did this experiment with php apc:

In php.ini I set include_path = /first/include/path:/second/include/path, but do not put a file in /first/include/path or /second/include/path, create test.php as simple as this

<?php
require 'tobeincluded.php';

It will run into a fatal error. This error is obvious.

Then I create the file tobeincluded.php in /second/include/path, test.php now runs all right.

Then I create another file with same file name as tobeincluded.php but different content and put it in /first/include/path, test.php keeps running as if /first/include/path/tobeincluded.php does not exist. This is because php apc has cached /second/include/path/tobeincluded.php and ignored /first/include/path/tobeincluded.php. Apc will refresh its cache when it is restarted or original cached file is updated in the file system. I assume apc is checking file timestamp.

Then I copy test.php to test2.php and put test2.php in the same folder as test.php, run test2.php. It renders the same result as test.php – include /second/include/path/tobeincluded.php but ignore the existence of /first/include/path/tobeincluded.php.

Then I copy test.php to test3.php and put test3.php in a different folder (no matter parent folder or child folder or irrelevant folder), run test3.php. Now it is aware of the existence of /first/include/path/tobeincluded.php so /first/include/path/tobeincluded.php is included in test3.php.

Even I trigger to run test2.php in a different virtual host (but same document root), it still renders the same result. I assume php file on the file system is identical to apc. In other words, apc loads cache data by realpath regardless virtual host.

The correct command to remove php 5.2 before upgrade zend server to 5.3 is

yum -y remove zend-server-php-5.2 && yum -y remove `rpm -qa|grep zend|xargs`

Use yum -y remove zend-server-php-5.2 is not enough.

After removal, run

yum install zend-server-ce-php-5.3

Of course, zend repository must be add to /etc/yum.repos.d before. (If not, where you got zend server php 5.2?)

The most recent /etc/yum.repos.d/zend.repo is

[Zend]
name=Zend Server
baseurl=http://repos.zend.com/zend-server/rpm/$basearch
enabled=1
gpgcheck=0

[Zend_noarch]
name=Zend Server – noarch
baseurl=http://repos.zend.com/zend-server/rpm/noarch
enabled=1
gpgcheck=0

I notice it was changed since my first copy. It was

[Zend]
name=Zend CE $releasever – $basearch – Released Updates
baseurl=http://repos.zend.com/rpm/ce/$basearch/
enabled=1
gpgcheck=0
[Zendce-noarch]
name=Zend CE – noarch
baseurl=http://repos.zend.com/rpm/ce/noarch
enabled=1
gpgcheck=0

Old copy no long work with command
yum install zend-server-ce-php-5.3