[ciapug] PHP 4 to 5

[Tony Bibbs]

Well, first gotcha will be if you pass any arrays by reference.  For 
example this isn't allowed:

$nextValue = array_pop(explode('/',$absolutePathToFile));

Instead you have to do:
$nextValue = array_pop($tmpArray = explode('/',$absolutePathToFile));

Or, preferrably
$tmpArray = explode('/',$absolutePathToFile);
$nextValue = array_pop($tmpArray);

Also, if you got lazy with your array keys you'll pay.  This isn't 
allowed anymore (which was bad practice to begin with):

$someArray[someKey]

Instead it has to be:

$someArray['someKey']

If you did OO programming in PHP4, the constructor is now always 
__construct() regardless of the class name.

Obviously the new OO features in PHP5 introduce a number of new keywords 
that should probably have been avoided in PHP4 by most folks but I don't 
doubt that a few cases may arise.

--Tony


Dave J. Hala Jr. wrote:
> Hmmm... So it would seems the upgrade issues are relatively minor.
> 
> Now, I'm anxious to give it a try!
> On Wed, 2005-11-23 at 08:30, Jeff Davis wrote:
> 
>>I believe I had that problem upgrading from 3.23 to 4.1
>>and I had to add old_passwords=1 to /etc/my.cnf
>>
>>
>>Jerry Heiselman wrote:
>>
>>>One of the problems you may experience is actually with the move to
>>>mysql 5.  They changed the hashing algorithm for the password()
>>>function and that broke a lot custom-made applications that used this
>>>function even though the MySQL documentation advises against this.  If
>>>you run into this problem, then you can either modify your code to
>>>call old_password() or modify your my.cnf file with a command that
>>>overrides the default password function (I believe that it's something
>>>like password=old_password.)
>>>
>>>Jerry
>>>
>>>
>>>On 11/23/05, Dave J. Hala Jr. <dave at 58ghz.net> wrote:
>>>
>>>
>>>>Were you running alot of "in-house" applications?
>>>>
>>>>On Wed, 2005-11-23 at 07:28, Chris Van Cleve wrote:
>>>>
>>>>
>>>>>I didn't have any issues moving from 4 to 5. It was smooth and
>>>>>painless. :)
>>>>>
>>>>>Chris VC
>>>>>
>>>>>On Nov 23, 2005, at 7:19 AM, Dave J. Hala Jr. wrote:
>>>>>
>>>>>
>>>>>
>>>>>>Does anyone have any experience taking PHP apps written in PHP4 and
>>>>>>running them on a server with PHP5?
>>>>>>
>>>>>>Did they run?
>>>>>>
>>>>>>I'm considering moving from php-4.3.2-25.ent, and
>>>>>>mysql-3.23.58-15.RHEL3.1 to RHEL 4, with PHP 5 and mysql 5 at the
>>>>>>start
>>>>>>of the next fiscal year.
>>>>>>
>>>>>>
>>>>>>
>>>>>>:) Dave
>>>>>>
>>>>>>--
>>>>>>
>>>>>>Open Source Information Systems, Inc. (OSIS)
>>>>>>Dave J. Hala Jr., President <dave at osis.us>
>>>>>>641.485.1606
>>>>>>
>>>>>>_______________________________________________
>>>>>>ciapug mailing list
>>>>>>ciapug at cialug.org
>>>>>>http://cialug.org/mailman/listinfo/ciapug
>>>>>>
>>>>>>
>>>>>
>>>>>_______________________________________________
>>>>>ciapug mailing list
>>>>>ciapug at cialug.org
>>>>>http://cialug.org/mailman/listinfo/ciapug
>>>>
>>>>--
>>>>
>>>>Open Source Information Systems, Inc. (OSIS)
>>>>Dave J. Hala Jr., President <dave at osis.us>
>>>>641.485.1606
>>>>
>>>>_______________________________________________
>>>>ciapug mailing list
>>>>ciapug at cialug.org
>>>>http://cialug.org/mailman/listinfo/ciapug
>>>>
>>>
>>>_______________________________________________
>>>ciapug mailing list
>>>ciapug at cialug.org
>>>http://cialug.org/mailman/listinfo/ciapug
>>
>>_______________________________________________
>>ciapug mailing list
>>ciapug at cialug.org
>>http://cialug.org/mailman/listinfo/ciapug