DOMImplementation::getFeature() is undocumented

[WinterSilence]

From manual page: https://php.net/class.domimplementation

---

ReflectionClass detect method getFeature() missed in manual:

Method [  public method getFeature ] {
  - Parameters [2] {
    Parameter #0 [  $feature ]
    Parameter #1 [  $version ]
  }
}

ReflectionMethod not detect hasFeature() parameters:

Method [  public method hasFeature ] {
  - Parameters [0] {
  }
}

but in manual:
public hasFeature(string $feature, string $version): bool

[cmb69]

The ::getFeature() documentatation is indeed missing, but the signature of ::hasFeature() is correct (reflection is wrong for PHP 7.4, what has been fixed for PHP 8).

[WinterSilence]

@cmb69 I use PHP 7.3, why not fix it in 7.x too?

[cmb69]

PHP 7.3 is no longer actively supported, so won't receive bug fixes; fixing this for PHP 7.4 would constitute a BC break.

[WinterSilence]

@cmb69 doesn't fix in PHP 8 break BC? I think any bugfix can't be BC.

[cmb69]

doesn't fix in PHP 8 break BC?

Yes, but some BC breaks are allowed in a major version.

[nielsdos]

The documentation for this method is missing because it was never implemented. i.e. it always threw a "not implemented yet" dom exception, since the very beginning.
I placed this on the proposed deprecation list for 8.4, so I don't think we should actually document this?

[Girgias]

ACK, just cross-mentioning this for #2163