An equivalent for PHP 7:
<?php
$reflectionProperty = new \ReflectionProperty(Foo::class, 'bar');
//PHP 8:
$defaultValue = $reflectionProperty->getDefaultValue();
//PHP 7:
$defaultValue = $reflectionProperty->getDeclaringClass()->getDefaultProperties()['bar'] ?? null;
?>
ReflectionProperty::getDefaultValue
(PHP 8)
ReflectionProperty::getDefaultValue — Returns the default value declared for a property
Descrierea
Gets the implicit or explicitly declared default value for a property.
Parametri
Această funcție nu are parametri.
Valorile întoarse
The default value if the property has any default value (including null).
If there is no default value, then null is returned. It is not possible to differentiate
between a null default value and an unitialized typed property.
Use ReflectionClass::hasDefaultValue() to detect the difference.
Exemple
Example #1 ReflectionClass::getDefaultValue() example
<?php
class Foo {
public $bar = 1;
public ?int $baz;
public int $boing = 0;
}
$ro = new ReflectionClass(Foo::class);
var_dump($ro->getProperty('bar')->getDefaultValue());
var_dump($ro->getProperty('baz')->getDefaultValue());
var_dump($ro->getProperty('boing')->getDefaultValue());
?>
Exemplul de mai sus va afișa:
int(1) NULL int(0)
A se vedea și
- ReflectionProperty::hasDefaultValue() - Checks if property has a default value declared
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User Contributed Notes 1 note
rwalker dot php at gmail dot com ¶
3 years ago
