gistfile1.php

/**
     * {@inheritdoc}
     * 
     * @note Image dimensions returned as array(width, height)
     */
    public function fetchMetaDataFrom($filePath)
    {
        if (!file_exists($filePath))
            throw new MetaDataFileNotFoundException(sprintf("File %s could not be found for metadata retrieval", $filePath));

        $metadata = @getimagesize($filePath);
        if ($metadata === false)
            throw new MetaDataFileNotReadableException(sprintf("File %s metadata couldn't be read. Permissions problem?", $filePath));

        list($width, $height, $type, /** Skip $attr **/) = $metadata;

        $extension = $this->resolveImageType($type);

        if (!in_array($extension, $this->allowedImageTypes))
            throw new MetaDataImageExtensionNotAllowedException(sprintf("File %s wasn't in allowed image types: %s", $extension, print_r($this->allowedImageTypes, true)));

        return array($width, $height);
    }