array ps_string_geometry ( resource psdoc, string text [, int fontid [, float size]] )
This function is similar to ps_stringwidth() but returns
an array of dimensions.
Return Values
An array of the dimensions of a string. The element 'width' contains the
width of the string as returned by ps_stringwidth(). The
element 'descender' contains the maximum descender and 'ascender' the
maximum ascender of the string.
