Fixed deprecation warning for str_getcsv in php 8.4, since the default
parameter will change, by providing the parameter explicitly.
Sidenote: some of the vendor packages still have the same issue with
deprecation warnings when running code maintenance tools. They should be
updated as well.
Closes#587
`substr()` only fails when one of the inputs is not a `string`, but that no longer
holds true as per `php:^8.0`, since the input must be a `string` upfront.
Rename `Type\IntegerValue` to `Type\Integer`. It was originally named
`IntegerValue` because static analysis sees `Integer` in docblock
annotations and treats it as the native `int` type. `Integer` is not a
reserved word in PHP, so it should be named `Integer` for consistency
with other types in this library. When using it, a class alias prevents
static analysis from complaining.
While the rule is now disabled, it still is very much valuable to import most pure functions from the core
PHP scope, allowing us some marginal gains on anything that can be inlined by the engine (now or in future).
The rule does not allow selective exclusions, so we will need to keep it off for now.
As documented in https://wiki.php.net/rfc/use_global_elements, the engine (by default) does a local namespace
lookup, then falls back to global namespace when first calling a global function referenced in namespaced code,
unless that function is referenced via fully qualified name (FQN).
By using the FQN, the actual symbol can be looked up at compile-time, both by the PHP engine and by static analysis
tooling, allowing for compiler (in particular) optimizations to replace known hot-path functions with specialized opcodes.
Sadly, no actual benchmark at hand: the improvements can be minimal or massive, depending on where this library is
used (tight loops being most relevant).