I couldn't find a list of what qualifies as a builtin. Here is what I have so far:
string
float
bool
int
iterable (Iterator reflects as type iterable)
mixed
array
These do not qualify as builtins:
Closure
Stringable
Generator
Traversable
Serializable
Throwable
IteratorAggregate
ArrayAccess
WeakReference
JsonSerializeable
ReflectionNamedType::isBuiltin
(PHP 7, PHP 8)
ReflectionNamedType::isBuiltin — Checks if it is a built-in type
Description
Checks if the type is a built-in type in PHP. A built-in type is any type that is not a class, interface, or trait.
Parameters
This function has no parameters.
Return Values
true if it's a built-in type, otherwise false
Examples
Example #1 ReflectionNamedType::isBuiltin() example
<?php
class SomeClass {}
function someFunction(string $param, SomeClass $param2, stdClass $param3) {}
$reflectionFunc = new ReflectionFunction('someFunction');
$reflectionParams = $reflectionFunc->getParameters();
var_dump($reflectionParams[0]->getType()->isBuiltin());
var_dump($reflectionParams[1]->getType()->isBuiltin());
var_dump($reflectionParams[2]->getType()->isBuiltin());The above example will output:
bool(true) bool(false) bool(false)
Note that the ReflectionNamedType::isBuiltin() method does not distinguish between internal and custom classes. To make this distinction, the ReflectionClass::isInternal() method should be used on the returned class name.
See Also
- ReflectionType::allowsNull() - Checks if null is allowed
- ReflectionType::__toString() - To string
- ReflectionClass::isInternal() - Checks if class is defined internally by an extension, or the core
- ReflectionParameter::getType() - Gets a parameter's type
add a note
User Contributed Notes 2 notes
mndevel at gmail dot com ¶
3 years ago
yarns_purport0n at icloud dot com ¶
2 years ago
built-in types () are:
- `array`
- `callable`
- `bool`
- `float`
- `int`
- `string`
- `iterable`
- `object`
- `mixed`
Note: tested from the list at https://php.net/language.types.declarations#language.types.declarations.base
`self` & `parent` are not included.
