protected function _normalizeMethodCallable($callable)
    {
        if (is_object($callable) && is_callable($callable)) {
            return array($callable, '__invoke');
        }

        $amtPartsRequired = 2; // Number of parts required for a valid callable
        $origCallable     = $callable; // Preserving the original value for reporting

        // If stringable, try to separate into parts
        try {
            $callable = $this->_normalizeString($callable);
            $callable = explode('::', $callable, $amtPartsRequired);
        } catch (InvalidArgumentException $e) {
            // Just continue
        }

        // Normalizing to array
        $callable = $this->_normalizeArray($callable);
        $callable = array_slice($callable, 0, $amtPartsRequired);

        // Array must have exactly 2 parts
        if (count($callable) !== $amtPartsRequired) {
            throw $this->_createOutOfRangeException($this->__('The callable must have at least %1$s parts', array($amtPartsRequired)), null, null, $origCallable);
        }

        // First value must be an object or string, because stringable objects should be valid targets
        if (!is_string($callable[0]) && !is_object($callable[0])) {
            throw $this->_createOutOfRangeException($this->__('The first part must be an object or a string'), null, null, $origCallable);
        }

        // The second value must be a string or stringable
        try {
            $callable[1] = $this->_normalizeString($callable[1]);
        } catch (InvalidArgumentException $e) {
            throw $this->_createOutOfRangeException($this->__('The second part must be a string or stringable'), null, $e, $origCallable);
        }

        return $callable;
    }
protected function _normalizeMethodCallable($callable)
    {
        if (is_object($callable) && is_callable($callable)) {
            return array($callable, '__invoke');
        }

        $amtPartsRequired = 2; // Number of parts required for a valid callable
        $origCallable     = $callable; // Preserving the original value for reporting

        // If stringable, try to separate into parts
        try {
            $callable = $this->_normalizeString($callable);
            $callable = explode('::', $callable, $amtPartsRequired);
        } catch (InvalidArgumentException $e) {
            // Just continue
        }

        // Normalizing to array
        $callable = $this->_normalizeArray($callable);
        $callable = array_slice($callable, 0, $amtPartsRequired);

        // Array must have exactly 2 parts
        if (count($callable) !== $amtPartsRequired) {
            throw $this->_createOutOfRangeException($this->__('The callable must have at least %1$s parts', array($amtPartsRequired)), null, null, $origCallable);
        }

        // First value must be an object or string, because stringable objects should be valid targets
        if (!is_string($callable[0]) && !is_object($callable[0])) {
            throw $this->_createOutOfRangeException($this->__('The first part must be an object or a string'), null, null, $origCallable);
        }

        // The second value must be a string or stringable
        try {
            $callable[1] = $this->_normalizeString($callable[1]);
        } catch (InvalidArgumentException $e) {
            throw $this->_createOutOfRangeException($this->__('The second part must be a string or stringable'), null, $e, $origCallable);
        }

        return $callable;
    }
protected function _normalizeMethodCallable ( $ callable ) { if ( is_object ( $ callable ) && is_callable ( $ callable ) ) { return array ( $ callable , '__invoke' ) ; } $ amtPartsRequired = 2 ; // Number of parts required for a valid callable $ origCallable = $ callable ; // Preserving the original value for reporting // If stringable, try to separate into parts try { $ callable = $ this -> _normalizeString ( $ callable ) ; $ callable = explode ( '::' , $ callable , $ amtPartsRequired ) ; } catch ( InvalidArgumentException $ e ) { // Just continue } // Normalizing to array $ callable = $ this -> _normalizeArray ( $ callable ) ; $ callable = array_slice ( $ callable , 0 , $ amtPartsRequired ) ; // Array must have exactly 2 parts if ( count ( $ callable ) !== $ amtPartsRequired ) { throw $ this -> _createOutOfRangeException ( $ this -> __ ( 'The callable must have at least %1$s parts' , array ( $ amtPartsRequired ) ) , null , null , $ origCallable ) ; } // First value must be an object or string, because stringable objects should be valid targets if ( ! is_string ( $ callable [ 0 ] ) && ! is_object ( $ callable [ 0 ] ) ) { throw $ this -> _createOutOfRangeException ( $ this -> __ ( 'The first part must be an object or a string' ) , null , null , $ origCallable ) ; } // The second value must be a string or stringable try { $ callable [ 1 ] = $ this -> _normalizeString ( $ callable [ 1 ] ) ; } catch ( InvalidArgumentException $ e ) { throw $ this -> _createOutOfRangeException ( $ this -> __ ( 'The second part must be a string or stringable' ) , null , $ e , $ origCallable ) ; } return $ callable ; }
Normalizes a method representation into a format recognizable by PHP as callable.

This does not guarantee that the callable will actually be invocable at this time; only that it looks like
something that can be invoked. See the second argument of {@see is_callable()).

@since [*next-version*]

@param string|Stringable|stdClass|Traversable|array $callable The stringable that identifies a static method,
or a list, where the first element is a class or class name, and the second is the name of the method. If the list has
more than 2 parts, other parts will be removed. The second element may be a Stringable object, and will then
be normalized. The first element MUST be a string or object, and will not be normalized.

@see is_callable()

@throws InvalidArgumentException If the argument is not stringable and not a list.
@throws OutOfRangeException      If the argument does not contain enough parts to make a callable, if one of the parts is invalid.

@return array An array, where the first element is an object or a class name, and the second element is the name of a method.
Normalizes a method representation into a format recognizable by PHP as callable .