At example #2: the comment // int(2) is stated while the value for the private property is actually 3. (private $z = 3;)
var_dump($prop->getValue($obj)); // This should be int(3)
ReflectionProperty::__construct
(PHP 5, PHP 7, PHP 8)
ReflectionProperty::__construct — Construct a ReflectionProperty object
Descrição
public ReflectionProperty::__construct
( object|string
$class
, string $property
)
Aviso
Esta função não está documentada; somente a lista de argumentos está disponível.
Parâmetros
-
class -
Either a string containing the name of the class to reflect, or an object.
-
property -
The name of the property being reflected.
Valor Retornado
Não há valor retornado.
Erros
Trying to get or set private or protected class property's values will result in an exception being thrown.
Exemplos
Exemplo #1 ReflectionProperty::__construct() example
<?php
class Str
{
public $length = 5;
}
// Create an instance of the ReflectionProperty class
$prop = new ReflectionProperty('Str', 'length');
// Print out basic information
printf(
"===> The%s%s%s%s property '%s' (which was %s)\n" .
" having the modifiers %s\n",
$prop->isPublic() ? ' public' : '',
$prop->isPrivate() ? ' private' : '',
$prop->isProtected() ? ' protected' : '',
$prop->isStatic() ? ' static' : '',
$prop->getName(),
$prop->isDefault() ? 'declared at compile-time' : 'created at run-time',
var_export(Reflection::getModifierNames($prop->getModifiers()), 1)
);
// Create an instance of Str
$obj= new Str();
// Get current value
printf("---> Value is: ");
var_dump($prop->getValue($obj));
// Change value
$prop->setValue($obj, 10);
printf("---> Setting value to 10, new value is: ");
var_dump($prop->getValue($obj));
// Dump object
var_dump($obj);
?>
O exemplo acima irá imprimir algo similar à:
===> The public property 'length' (which was declared at compile-time)
having the modifiers array (
0 => 'public',
)
---> Value is: int(5)
---> Setting value to 10, new value is: int(10)
object(Str)#2 (1) {
["length"]=>
int(10)
}
Exemplo #2 Getting value from private and protected properties using ReflectionProperty class
<?php
class Foo {
public $x = 1;
protected $y = 2;
private $z = 3;
}
$obj = new Foo;
$prop = new ReflectionProperty('Foo', 'y');
$prop->setAccessible(true);
var_dump($prop->getValue($obj)); // int(2)
$prop = new ReflectionProperty('Foo', 'z');
$prop->setAccessible(true);
var_dump($prop->getValue($obj)); // int(2)
?>
O exemplo acima irá imprimir algo similar à:
int(2) int(3)
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User Contributed Notes 1 note
geoffsmiths at hotmail dot com ¶
6 years ago
