ReflectionClass::hasMethod

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

ReflectionClass::hasMethod — Verifica si un método está definido

Descripción

public function ReflectionClass::hasMethod(string $name): bool

Verifica si un método específico está definido en una clase.

Parámetros

name: Nombre del método a verificar.

Valores devueltos

true si el método está definido, false en caso contrario.

Ejemplos

Ejemplo #1 Ejemplo con ReflectionClass::hasMethod()

<?php
Class C {
    public function publicFoo() {
        return true;
    }

    protected function protectedFoo() {
        return true;
    }

    private function privateFoo() {
        return true;
    }

    static function staticFoo() {
        return true;
    }
}

$rc = new ReflectionClass("C");

var_dump($rc->hasMethod('publicFoo'));

var_dump($rc->hasMethod('protectedFoo'));

var_dump($rc->hasMethod('privateFoo'));

var_dump($rc->hasMethod('staticFoo'));

// C no debería tener el método bar
var_dump($rc->hasMethod('bar'));

// Los nombres de los métodos no son sensibles a mayúsculas/minúsculas
var_dump($rc->hasMethod('PUBLICfOO'));
?>

El ejemplo anterior mostrará:

bool(true)
bool(true)
bool(true)
bool(true)
bool(false)
bool(true)

Ver también

ReflectionClass::hasConstant() - Verifica si una constante está definida
ReflectionClass::hasProperty() - Verifica si una propiedad está definida

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User Contributed Notes 6 notes

down

phoenix at todofixthis dot com ¶

15 years ago

Parent methods (regardless of visibility) are also available to a ReflectionObject.  E.g.,

<?php
class ParentObject {
  public function parentPublic(  ) {
  }

  private function parentPrivate(  ) {
  }
}

class ChildObject extends ParentObject {
}

$Instance = new ChildObject();
$Reflector = new ReflectionObject($Instance);

var_dump($Reflector->hasMethod('parentPublic'));  // true
var_dump($Reflector->hasMethod('parentPrivate')); // true
?>

down

dn dot permyakov at gmail dot com ¶

7 years ago

Trait methods can be seen by both actual and alias names

<?php

trait Sauce
{
    public function getSpicy()
    {
        return 'Cayenne';
    }
}

class Sandwich
{
    use Sauce {
        Sauce::getSpicy as getSweet;
    }
}

$class = new \ReflectionClass('Sandwich');
var_dump($class->hasMethod('getSweet'));
var_dump($class->hasMethod('getSpicy'));
?>
bool(true)
bool(true)

down

flancer64 at gmail dot com ¶

9 years ago

Annotated methods that are implemented using PHP magic methods are not recognized  by "hasMethod".

<?php
/**
 * @method void annotatedMethod()
 */
class SomeClass
{
    public function __call($name, $arguments)
    {
        echo "this is magic method: $name.\n";
    }

    public function codedMethod()
    {
        echo "this is coded method.\n";
    }
}

$obj = new \SomeClass();
$obj->codedMethod();
$obj->annotatedMethod();

$ref = new ReflectionClass(\SomeClass::class);
echo "SomeClass has 'codedMethod': " . json_encode($ref->hasMethod('codedMethod')) . ".\n";
echo "SomeClass has 'annotatedMethod': " . json_encode($ref->hasMethod('annotatedMethod')) . ".\n";
?>

Output:

this is coded method.
this is magic method: annotatedMethod.
SomeClass has 'codedMethod': true.
SomeClass has 'annotatedMethod': false.

down

hanguofeng at gmail dot com ¶

15 years ago

note that even if private method will also be 'has'.

down

-1

Xorifelse ¶

9 years ago

It might be interesting to know that this is the only method to determine if a trait has a specific method:

  trait a{
    function __wakeup(){}
  }

  class b{}

  class c{
    use a;
  }

  var_dump((new ReflectionClass('a'))->hasMethod('__wakeup')); // true
  var_dump((new ReflectionClass('b'))->hasMethod('__wakeup')); // false
  var_dump((new ReflectionClass('c'))->hasMethod('__wakeup')); // true

down

-4

michaelgranados at gmail dot com ¶

14 years ago

A way to check if you can call an method over a class:

<?php
function is_public_method(
        /* string */$className,
        /* string */$method
){
    $classInstance = new ReflectionClass($className);
    if ($classInstance->hasMethod($method)) {
        return false;
    }
    $methodInstance = $instance->getMethod($method);
    return $methodInstance->isPublic();
}
?>

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