@cname currently refers to the constant name in C. However, it is not always a (constant) name, but sometimes a function invocation, so naming it as @cvalue would be more appropriate.
By convention, parameter names of camel case methods should also
be camel case, i.e. the name should be $fieldName rather than
$field_name.
However, following GH-7236, which changed $arg_index to just $index,
this also changes $field_name to just $name. The fact that it is
a field name is obvious from context.
PHP is already already using "Parameter" instead of "Argument" for reflection on types elsewhere.
Parameter is used to refer to the function declarations
(AST_PARAM internally in the AST, ReflectionFunctionAbstract->getParameters(),
etc.)
Argument is used to refer to expressions passed to the functions by the caller
(ArgumentCountError, etc.).
(Error messages were also changed in php 8.x to refer to passing too many arguments to a
function)
Other languages use similar definitions,
e.g. https://developer.mozilla.org/en-US/docs/Glossary/Parameter
This closes the last hole in the supported types for internal
function arginfo types. It's now possible to represent unions of
multiple classes. This is done by storing them as TypeA|TypeB and
PHP will then convert this into an appropriate union type list.
Closes GH-6581.
