I have the scenario where on my local PC I have PHP 5.0, but on the web hosting server where my clients sites are held they have PHP 4.3.* (its version 4.*.*, I know that for sure).
Recently I had to perform a fix, so got the files off the server, and then loaded them up on my local PC (running 5.0). I had quite a few problems. For example, using <?= some code ?> didn't work, I had to change them to <?php echo some code ?> (is there something I can change in the PHP.ini file so that PHP 5.* can use <?= statements?).
There are some other problems, which when i encounter them again, I will post here.
Tryst
-----Original Message-----
From: git@xxxxxxxxxxxxxxx
To: php-windows@xxxxxxxxxxxxx
Sent: Tue, 2 Jan 2007 9.39AM
Subject: Re: php5
On Tue, 02 Jan 2007 08:10:22 +0000, Lester Caine wrote:
> Mike harrell wrote:
>> Is php5 backwards compatable with php4 scripts ?
>
> We run a lot of PHP5 code that works fine on PHP4 as well, but there are
> a number of areas that will give problems and may need you to make
> changes to code.
>
> http://uk2.php.net/manual/en/migration5.php is the starting point, but a
> number of other annoying changes happened between 5.0, 5.1 and 5.2 so
> you will need to check the additional migration notes for each of those.
>
> ( Do we need a proper Migrate PHP4 to PHP5.2 document? )
I have found that each version of PHP is not backwards compatable with the
one before. 4.4 is not compatable with 4.3 etc.
Each release seems to have a set of little fiddles that make something
break. Going from 4.4 to 5.x makes just about every script we have break
- badly. It would be a major coding task requiring at least one dedicated
regression tester and 3 programmers for us to get up to stable at 5.x in
in a realistic space of time.
The COM stuff is totally different. Object handling in 5.x is complete
overkill, default reference passing behaviour has changed. Oh - and in
all the tests I have done, php 5.x is slower that php4 :-(
IMHO php 4.4.x is a really cool interpreter which is ideal for web tasks
of any size. PHP 5.x has lost its way, trying to compete head on with
asp.net and jsp. If I want jsp, I'll go get jsp. If I want asp.net - I
get psychotherapy!
"If it ain't busted, don't fix it!"
AJ
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