cpdf_set_text_matrix
    (PHP 3>= 3.0.8, PHP 4 , PHP 5)
cpdf_set_text_matrix -- Sets the text matrix
Description
bool 
cpdf_set_text_matrix ( int pdf_document, array matrix )
     The cpdf_set_text_matrix() function sets
     a matrix which describes a transformation 
     applied on the current text font. Returns TRUE on success or FALSE on failure.