Object-Oriented PHP

The ThumbnailImage Class

In the following sections, you'll examine the entire ThumbnailImage class, interspersing the code with comments.

Data Members

As always, the data members are private. The variable $image holds the actual thumbnail image itself.

    private $image;
    private $quality = 100;
    private $mimetype;
    private $imageproperties = array();
    private $initialfilesize;

Since, in some cases, you may want to vary the quality of the thumbnail, you create the attribute $quality. For very large files (large in terms of byte count rather than just dimensions), you may need to reduce the quality of an image as well as its size. Give $quality a default value of 100 to indicate no reduction in quality, because in most cases, you will retain the ...