Why can't you update to Version 5? I might be a bit anal about trying to
always get the newest version of everything, but seriously version 3 has
surely more known security issues as well as performance costs.
What's the cost of upgrading compared to the cost of writing code that works
in every version? I think upgrading the system to PHP 5 will take you maybe
half an hour, while you can spend a lot more hours on writing backward
compatible code. PHP is not very good with compatibility across versions
anyway. Hopefully all PHP 5 code will work in PHP 6.
How about this PHP developers: You could make a global variable (or
constant) the user can set like
define('PHP_COMPATIBLE_VERSION', '5.0.1');
or something to tell PHP 6 to interpret it like PHP 5.x . That way, at least
you are guaranteed that the code will work like on that version. It might
make PHP 6 (a lot?) bigger but it might be worth the cost, since all Sites
written in PHP will still work. The functions could still have a performance
boost that way if there are better algorithms.
Sorry for steeling the thread.
Regards,
Tim
Tim-Hinnerk Heuer
http://www.ihostnz.com
On Fri, Feb 6, 2009 at 12:55 AM, Thodoris <tgol@xxxxxxxxxx> wrote:
>
> Is there a way to check not only if a function exists, but also to check
>> that the number and types of parameters desired match a function definition?
>>
>> The reason being that additional options have been added in php 4 and 5 to
>> various standard function calls, but I'm still running a php3 and php4
>> server in addition to a php5 server. I would like to make sure that certain
>> "extended" function calls still work in all versions (or I'll perform the
>> tasks "manually", albeit less efficiently).
>>
>> One example I can think of is the round() function. The $precision
>> parameter was added in php4, so will not work in php3. However,
>> function_exists would return TRUE for both 3 and 4, but round itself would
>> fail if I tried to send a precision level to the php3 server.
>>
>> Thanks much,
>> Matt
>>
>> P.S. Of course the modified "function_exists" would unfortunately have to
>> be a recognized function/method in php3 in order for me to call it to check
>> parameter counts on a php3 server :(
>>
>>
> I am sure you have some good reasons for keeping php3 right?
>
> Why don't you consider updating to at least php4 ??
>
> PHPv3 is not even maintained and PHPv4 is not being developed any more.
>
> So by the end of this year (I hope) we will start using a stable PHPv6.
>
> IMHO you should consider changing your code (if this is possible) to a more
> mainstream version.
>
> --
> Thodoris
>
>
>
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