cpdf_set_subject

Sets the subject field of the pdf document (PHP 3 >= 3.0.8, PHP 4, PHP 5 <= 5.0.4)
bool cpdf_set_subject ( int pdf_document, string subject )

The cpdf_set_subject() function sets the subject of a pdf document. 如果成功则返回 TRUE,失败则返回 FALSE

See also cpdf_set_title(), cpdf_set_creator() and cpdf_set_keywords().