PHP 7.0.6 Released

    ReflectionClass::__construct

    (PHP 5, PHP 7)

    ReflectionClass::__construct — Constructs a ReflectionClass

    Description

    public ReflectionClass::__construct ( mixed $argument )

    Constructs a new ReflectionClass object.

    Warning

    This function is currently not documented; only its argument list is available.

    Parameters

    argument

    Either a string containing the name of the class to reflect, or an object.

    Return Values

    No value is returned.

    Examples

    Example #1 Basic usage ReflectionClass

    <?php
    Reflection    ::export(new ReflectionClass('Exception'));
    ?>

    The above example will output something similar to:

    Class [ <internal:Core> class Exception ] {

  - Constants [0] {
  }

  - Static properties [0] {
  }

  - Static methods [0] {
  }

  - Properties [7] {
    Property [ <default> protected $message ]
    Property [ <default> private $string ]
    Property [ <default> protected $code ]
    Property [ <default> protected $file ]
    Property [ <default> protected $line ]
    Property [ <default> private $trace ]
    Property [ <default> private $previous ]
  }

  - Methods [10] {
    Method [ <internal:Core> final private method __clone ] {
    }

    Method [ <internal:Core, ctor> public method __construct ] {

      - Parameters [3] {
        Parameter #0 [ <optional> $message ]
        Parameter #1 [ <optional> $code ]
        Parameter #2 [ <optional> $previous ]
      }
    }

    Method [ <internal:Core> final public method getMessage ] {
    }

    Method [ <internal:Core> final public method getCode ] {
    }

    Method [ <internal:Core> final public method getFile ] {
    }

    Method [ <internal:Core> final public method getLine ] {
    }

    Method [ <internal:Core> final public method getTrace ] {
    }

    Method [ <internal:Core> final public method getPrevious ] {
    }

    Method [ <internal:Core> final public method getTraceAsString ] {
    }

    Method [ <internal:Core> public method __toString ] {
    }
  }
}

    See Also

    User Contributed Notes

    me [at] klay [dot] me
    2 years ago
    Example of usage:

        public static function getClassData($class)
        {
            // Trying to create a new object of ReflectionClass class
            $class = new ReflectionClass($class);

            $details = sprintf('%s - %s%s%s%s%s%s%s%s',
                $class->getName(),
                $class->isInternal()     ? 'internal class,' : 'user-defined class,',
                $class->isTrait()        ? '  is trait,'  : '',
                $class->isInterface()    ? '  is interface,'  : '',
                $class->isAbstract()     ? '  is abstract,'  : '',
                $class->isFinal()        ? '  is final,'  : '',
                $class->isCloneable()    ? '  is cloneable,'  : '',
                $class->isInstantiable() ? ' is instantiable,'  : '',
                $class->isIterateable()  ? ' is iterable  : ''
            );

            return '<pre class="debug">' . rtrim($details, ',') . '</pre>';
        }
    gafisher at griasolutions dot com
    4 years ago
    Running the following code on Windows Vista (I know, I know), PHP 5.3.9, the ReflectionClass constructor actually throws a ReflectionException when the desired class cannot be instantiated:

    <?php
            try {
                $ReflectedClass = new ReflectionClass('NonExist');
        } catch (    LogicException $Exception) {
            die(    'Not gonna make it in here...');
        } catch (    ReflectionException $Exception) {
            die(    'Your class does not exist!');
        }
    ?>
    ivo at jansch dot nl
    6 years ago
    It's very useful to know that you can also use the ReflectionClass to inspect interfaces, even thouth Interfaces are not classes. Example:

    <?php

          interface Edible
          {
        public function     eat();
      }

          $refl = new ReflectionClass("Edible");
          $methods = $refl->getMethods();
    ?>

    [Edit by danbrown AT php DOT net - Contains a bugfix by (dbl AT bnet DOT com) on 18-AUG-2010 with the following message: "underline had to be removed for it to work ( new Reflection_Class -> new ReflectionClass )"]
    danbettles at yahoo dot co dot uk
    11 months ago
    To reflect on a namespaced class in PHP 5.3, you must always specify the fully qualified name of the class - even if you've aliased the containing namespace using a "use" statement.

    So instead of:

    <?php
    use App\Core as Core;
    $oReflectionClass = new ReflectionClass('Core\Singleton');
    ?>

    You would type:

    <?php
    use App\Core as Core;
    $oReflectionClass = new ReflectionClass('App\Core\Singleton');
    ?>
    nulled
    2 years ago
    if (is_file($classfile))
                require_once $classfile;

    if (! class_exists($classname, false))
                exit('ERROR: ' . $classname . ' is not defined as a Class');

    The above code is useful to tell if the class was defined.  You could also use another commentors method using Try Catch Exceptions.  But, if you do not use try blocks much, the above function based method works just fine.

    From there, you can than call:

    $class = new ReflectionClass($classname);

            if (! $class->isSubclassOf('PanelCommon'))
                exit("ERROR: {$classname} must extends PanelCommon");

            if (! $class->isUserDefined())
                exit("ERROR: {$classname} must be user defined and not internal to PHP");

            if (! $class->IsInstantiable())
                exit("ERROR: {$classname} must be IsInstantiable and not an Interface or Abstract class");

            if (! $class->hasMethod('home'))
                exit("ERROR: {$classname} lacks required method/function home()");

    Forforth and so on.
    cspray at gmail dot com
    4 years ago
    Useful to know that if you pass a string into the construct and the class cannot be instantiated for some reason a SPL LogicException will be thrown.

    This code was ran on a Mac OS X 10.6.7, AMP, PHP 5.3+

    <?php

            //  index.php
            try {
                $ReflectedClass = new ReflectionClass('NonExist');
        } catch (    LogicException $logicDuh) {
                print_r($logicDuh);
        }
       
    ?>

    Will return a deeply nested array full of useful information about the error.
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