Re: php4 to php5

[Keith Roberts <keith@xxxxxxxxxxxx>]

Hi Richard. You might find the following usefull:

http://www.php.net/manual/en/migration5.php

PHP 5 has a new directive called:-

zend.ze1_compatibility_mode  boolean

Enable compatibility mode with Zend Engine 1 (PHP 4). It 
affects the cloning, casting (objects with no properties 
cast to FALSE or 0), and comparing of objects. In this mode, 
objects are passed by value instead of reference by default.

http://www.php.net/manual/en/ini.core.php#ini.zend.ze1-compatibility-mode

http://www.php.net/manual/en/migration5.newconf.php

I'm running PHP 5.2.4 on Fedora 8. I found 5.2.5 a bit 
buggy.

I have not used the zend.ze1_compatibility_mode, as all my 
code has been converted to PHP 5 - which is alot better OOP 
syntax than PHP 4.

zend.ze1_compatibility_mode  	"0"  	PHP_INI_ALL

This option can be set anywhere, i.e. in any of the 
following places:

Constant  	Value  	Meaning
PHP_INI_USER 	1
Entry can be set in user scripts or in Windows registry

PHP_INI_PERDIR 	2
Entry can be set in php.ini, .htaccess or httpd.conf

PHP_INI_SYSTEM 	4
Entry can be set in php.ini or httpd.conf

PHP_INI_ALL 	7
Entry can be set anywhere

So you have the option of telling PHP to use the 
zend.ze1_compatibility_mode = 1 for your older PHP4 scripts, 
and allowing PHP5 to be used for newer scripts you write.

How you chose to do that is entirely up to you.

N.B. zend.ze1_compatibility_mode will be removed from PHP6.

HTH

Keith Roberts.

-----------------------------------------------------------------
Websites:
http://www.karsites.net
http://www.php-debuggers.net
http://www.raised-from-the-dead.org.uk

All email addresses are challenge-response protected with
TMDA [http://tmda.net]
-----------------------------------------------------------------

On Tue, 22 Jan 2008, Richard Pyne wrote:

> To: php-install@xxxxxxxxxxxxx
> From: Richard Pyne <rpyne@xxxxxxxxxxx>
> Subject:  php4 to php5
>
> I am being pushed to update our prodction server from php 4.4.2 to php
> 5.2.5 because of an alert from ScanAlert claiming that there are
> vulnerabilities in any php version prior to 5.2.5.
>
> My concern is that we have several quite old php apps running on the
> machine and I hav neither the time nor the inclination to learn them well
> enough to debug and update them if they break.
>
> My question is what kind of problems am I likely to experience with the
> update?
>
> Thanks,
>
> --Richard