> On 19 Nov 2014, at 15:07, Alain Williams <a...@phcomp.co.uk> wrote:
> 
> It is a problem trying to maintain code for different versions of PHP,
> especially where there are syntax differences. It would be really nice to have
> some sort of conditional compilation as in C. Eg:
> 
> It would be nice to be able to do something like:
> 
> try {
> ....
> 
> # if PHP_VERSION_ID > 50500
> } catch(PDOException $e) {
>  ....
> } finally {
>   ... tidy up
> }
> # else
> } catch(PDOException $e) {
>  ... tidy up not quite where I want it
>  ....
> }
> # endif
> 
> OK: '#' might not be a good character since it is start of comment, but that 
> is
> the idea.

You could actually run the C preprocessor on your PHP codebase if you wanted!

But yes, I can see there might be a need for conditional compilation. To a 
certain extent we already have this, in that you can conditionally define 
functions and classes. Perhaps this could be extended? Conditionally defining 
methods?

    class FooBar {
        if (PHP_VERSION_ID < 50000) {
            public function FooBar() {
                $this->__construct();
            }
        }

        public function __foobar() {
            
        }
    }
--
Andrea Faulds
http://ajf.me/





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