Whatwould I need to do to upgrade my code?

martincrumlish

Hi,

I have a number of applications. They are all coded for PHP 4.06 with global variables turned on. Does anyone have any pointers as to what I would need to do to bring the code up to date with the latest version of PHP? I am trying to get an idea of the volume of work that will be required before I start reworking everything.

Any helpful links (ie: differances between 4.06 and 4.3) would also be appreciated.

Thanks,
Martin

PHPThorsten

The easiest way is to turn globals on.

if you can't do so, maybe you just need to extract() the $_REQUEST array.

if this isn't working (following is IMHO the best way), search for variables in your script that are submitted via POST or GET and "import" them at the beginning of your scripts.

$var = strip_tags($_GET['var']);

martincrumlish

Is there anything else that I would have to change other than the variables? What I am wondering is, are there any major changes that would make code used in 4.06 not work in the latest release.

Thanks

PHPThorsten

AFAIK there is not, but maybe this will help you: PHP.net ChangeLog

ahundiak

There are a few gotchas lurking.

Many functions that used to return NULL will now return FALSE which may or may not impact your code.
http://www.php.net/manual/en/function.array-search.php

You used to be able to define the same method twice in a class. Now the php engine will complain if it finds the same method twice.

Some functions such as file_get_contents() are new. You may have already written such a function in php in which case the php engine will again complain.