(PHP 5, PHP 7, PHP 8)
ReflectionClass::getConstant — Obtiene una constante
Obtiene una constante definida.
nameEl nombre de la constante de clase a obtener.
Valor de la constante con el nombre name.
Devuelve false si la constante no ha sido encontrada en la clase.
Ejemplo #1 Uso de ReflectionClass::getConstant()
<?php
class Example {
const C1 = false;
const C2 = 'I am a constant';
}
$reflection = new ReflectionClass('Example');
var_dump($reflection->getConstant('C1'));
var_dump($reflection->getConstant('C2'));
var_dump($reflection->getConstant('C3'));
?>El ejemplo anterior mostrará:
bool(false) string(15) "I am a constant" bool(false)
If the $name constant doesn't exist in the targetted class the function returns bool(false), not empty nor null but false (you to test with "==="$constFounded = false ;$this->currentlangClass = new ReflectionClass($langFile);$this->currentlangClass->getConstant($constant);if($myConst !== false){ $constFounded = true ;}The "getconstant" method can be used to get the value associated with a constant of a particular class that you are examining.The following code snippet shows this:<?php class Test{ const ONE = "Number one"; const TWO = "Number two"; } $obj = new ReflectionClass( "Test" ); echo $obj->getconstant( "ONE" )."\n"; echo $obj->getconstant( "TWO" )."\n"; ?>output:Number oneNumber two