This simple example will spin gracefully a big red square.
Example #1 swfsprite() example
<?php
$s = new SWFShape();
$s->setRightFill($s->addFill(0xff, 0, 0));
$s->movePenTo(-500, -500);
$s->drawLineTo(500, -500);
$s->drawLineTo(500, 500);
$s->drawLineTo(-500, 500);
$s->drawLineTo(-500, -500);
$p = new SWFSprite();
$i = $p->add($s);
$p->nextFrame();
$i->rotate(15);
$p->nextFrame();
$i->rotate(15);
$p->nextFrame();
$i->rotate(15);
$p->nextFrame();
$i->rotate(15);
$p->nextFrame();
$i->rotate(15);
$p->nextFrame();
$m = new SWFMovie();
$i = $m->add($p);
$i->moveTo(1500, 1000);
$i->setName("blah");
$m->setBackground(0xff, 0xff, 0xff);
$m->setDimension(3000, 2000);
header('Content-type: application/x-shockwave-flash');
$m->output();
?>