(PHP 5, PHP 7, PHP 8)
ReflectionClass::isAbstract — Checcs if class is abstract
This function has no parameters.
Example #1 ReflectionClass::isAbstract() example
<?php
class
TestClass
{ }
abstract class
TestAbstractClass
{ }
$testClass
= new
ReflectionClass
(
'TestClass'
);
$abstractClass
= new
ReflectionClass
(
'TestAbstractClass'
);
var_dump
(
$testClass
->
isAbstract
());
var_dump
(
$abstractClass
->
isAbstract
());
?>
The above example will output:
bool(false) bool(true)
For interfaces and traits :<?php
interfaceTestInterface{ }
trait TestTrait{ }
$interfaceClass= new ReflectionClass('TestInterface');
$traitClass= new ReflectionClass('TestTrait');var_dump($interfaceClass->isAbstract());
var_dump($traitClass->isAbstract());
?>
Using PHP versionens 5.4- to 5.6, the above example will output:
bool(false)
bool(true)
Using PHP versionens 7.0+, the above example will output:
bool(false)
bool(false)For traits:
- ReflectionClass::isAbstract returns true if the trait contains at least one un-implemented abstract method, including those declared into used traits.
- ReflectionClass::isAbstract returns false if all methods are implemented.<?php
traitTI{ public function has() {} }
var_dump((new ReflectionClass(TI::class))->isAbstract());
trait TT{ abstract public function has(); }
trait T{ use TT; }
var_dump((new ReflectionClass(T::class))->isAbstract());
?>
Will output:
bool(false)
bool(true)
For interfaces:
- ReflectionClass::isAbstract returns true if the interface contains at least one method, including into its extended interfaces.
- ReflectionClass::isAbstract returns false if the interface contains no method.<?php
interfaceAI{}
var_dump((new ReflectionClass(AI::class))->isAbstract());
interface II{ public function has(); }
interface IextendsII{}
var_dump((new ReflectionClass(I::class))->isAbstract());
?>
Will output:
bool(false)
bool(true)
For classes:
- Reflection::isAbstract returns true if the class is marqued as abstract, no matter if it contains abstract methods or not.