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    ReflectionClass::hasMethod

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

    ReflectionClass::hasMethod — メソッドが定義されているかどうかを調べる

    説明

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

    そのクラスで特定のメソッドが定義されているかどうかを調べます。

    パラメータ

    name

    調べたいメソッドの名前。

    戻り値

    メソッドが定義されている場合に true、それ以外の場合に false を返します。

    例

    例1 ReflectionClass::hasMethod() の例

    <?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 には bar メソッドがありません
    var_dump($rc->hasMethod('bar'));

    // メソッド名は大文字小文字を区別しません
    var_dump($rc->hasMethod('PUBLICfOO'));
    ?>

    上の例の出力は以下となります。

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

    参考

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    User Contributed Notes 6 notes

    up
    4
    phoenix at todofixthis dot com
    14 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
    ?>
    up
    1
    dn dot permyakov at gmail dot com
    5 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)
    up
    0
    flancer64 at gmail dot com
    8 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.
    up
    0
    hanguofeng at gmail dot com
    14 years ago
    note that even if private method will also be 'has'.
    up
    -1
    Xorifelse
    8 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
    up
    -4
    michaelgranados at gmail dot com
    12 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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