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
Descrizione
Gets the implicit or explicitly declared default value for a property.
Elenco dei parametri
Questa funzione non contiene parametri.
Valori restituiti
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 ReflectionProperty::hasDefaultValue() to detect the difference.
Esempi
Example #1 ReflectionProperty::getDefaultValue() example
<?php
class Foo {
public $bar = 1;
public ?int $baz;
public int $boing = 0;
public function __construct(public string $bak = "default") { }
}
$ro = new ReflectionClass(Foo::class);
var_dump($ro->getProperty('bar')->getDefaultValue());
var_dump($ro->getProperty('baz')->getDefaultValue());
var_dump($ro->getProperty('boing')->getDefaultValue());
var_dump($ro->getProperty('bak')->getDefaultValue());
?>Il precedente esempio visualizzerà:
int(1) NULL int(0) NULL
Vedere anche:
- 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
