PHPImage

Background color.

// valid syntaxes :
$image->bgcolor = 'blue 100%';
$image->bgcolor = 'blue 127';     // same as 'white 100%'
$image->bgcolor = '0 0 255 100%';
$image->bgcolor = '0 0 255';      // default transparency is 0%
$image->bgcolor = '#0000ff 100%';

Images are put in cache during this time (HTTP headers, or file with display method usage).

$image->cachetime = 86400; // one day in seconds

Default TTF font for all text methods.

$image->fontfile = 'arial.ttf';

Default TTF font size for all text methods.

$image->fontsize = 12;

Image format.

$image->format = 'png';
$image->format = 'gif';
$image->format = 'jpg';
$image->format = 'simplepng'; // PNG for IE < 7  ~~  like gif

Pixel height size.

$image->height;

Image quality (only for JPG).

$image->quality = 85;  // 0-100

This boolean says if images copy have to be done in real mode or not.
The default value is false.
Look at realcopy methods for further information.

1. Syntax

   $image->realcopy = true;

2. Différences with and without the real mode.

Pixel width size.

$image->width;