( resource pdfdoc, string text, float left, float top, float width, float height, string mode, string feature )
Format text in the current font and size into the
supplied text box according to the requested formatting
mode, which must be one of left,
right, center, justify
If width and height are 0,
only a single line is placed at the point (left,
top) in the requested mode.
Parameter feature was optional before PHP 5.
Returns the number of characters that did not fit in the specified
box. Returns 0 if all characters fit or the
width and height
parameters were set to 0 for single-line formatting.