Merge branch 'hotfix/#6032-php-memory-array-description'

Close #6032
Method getValue should check the type of input which it tries to getValue, if it is InputFilter then should return getValues
Changed test name to the name which reflect success case.
Adding `@group` and `@covers` annotations to input filter test for #6028
Merge branch 'hotfix/#6028-baseinputfilter-nested-inputfilter-values' into develop

Close #6028
Forward Port #6028