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Usually that=E2= =80=99s useful as it points to a code error. >>=20 >> =20 >>=20 >> However, sometimes we want our code to be compatible with an optional lib= rary. For example, my Expression class might be compatible with some ORM, bu= t it would also usable without it or with another ORM. This can already be a= ccomplished, but the solutions seems very workaroundish: https://stackoverfl= ow.com/questions/57996429/implements-interface-only-if-exists >>=20 >> =20 >>=20 >> Maybe the PHP itself should allow marking some interfaces as optional =E2= =80=94 such that they are discarded from the list if the interface class doe= s not exist? Here=E2=80=99s one way the syntax could look like: >>=20 >> =20 >>=20 >> class Expression implements MyInterface, ?OptionalInterface {} >>=20 >> =20 >>=20 >> interface EventDispatcherInterface extends ?PsrEventDispatcherInterfa= ce {} >>=20 >> =20 >>=20 >> BR, >>=20 >> Juris >>=20 >=20 > Hey Juris, >=20 > Is there some reason you cannot do this: >=20 > https://3v4l.org/hF1vr >=20 > =E2=80=94 Rob That seems to match what he shared on SO link? I think I opened this email with a strong negative feeling towards what woul= d be optional interface, but to be honest a syntax sugar where implements ?M= yInterface becomes something pretty close to what Rob shared doesn=E2=80=99t= sound bad, it=E2=80=99s just convenience. Unfortunately PHP is not keen on b= eing open to those. Overall, I dig it.= --Apple-Mail-D9BF9992-F3C4-4EFA-9AE6-8D2E6D79A097 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable

On 15 Nov 2024, at 20:42, Rob Landers <rob@bot= tled.codes> wrote:

=EF=BB=BF
On Sat, Nov 16, 2024, at 00:34, J= uris Evertovskis wrote:

Hey all,

 

If you try to implement an interface that does not exist, you= get the =E2=80=98Interface =E2=80=9C%s=E2=80=9D not found=E2=80=99 error. U= sually that=E2=80=99s useful as it points to a code error.

 

However, sometimes we= want our code to be compatible with an optional library. For example, my Ex= pression class might be compatible with some ORM, but it would also usable w= ithout it or with another ORM. This can already be accomplished, but the sol= utions seems very workaroundish: https://stackoverflow.com/= questions/57996429/implements-interface-only-if-exists

 

Maybe the PHP itself s= hould allow marking some interfaces as optional =E2=80=94 such that they are= discarded from the list if the interface class does not exist? Here=E2=80=99= s one way the syntax could look like:

 = ;

    class Expression imple= ments MyInterface, ?OptionalInterface {}

&n= bsp;

    interface EventDisp= atcherInterface extends ?PsrEventDispatcherInterface {}

 

BR,

Juris


Hey Juris,=

Is there some reason you cannot do this:


=E2=80=94 Rob
=

That seems to match what he shared on SO l= ink?

I think I opened this email with a strong nega= tive feeling towards what would be optional interface, but to be honest a sy= ntax sugar where implements ?MyInterface becomes something pretty close to w= hat Rob shared doesn=E2=80=99t sound bad, it=E2=80=99s just convenience. Unf= ortunately PHP is not keen on being open to those.

= Overall, I dig it.
= --Apple-Mail-D9BF9992-F3C4-4EFA-9AE6-8D2E6D79A097--