« PDF_set_char_spacing PDF_set_gstate » PHP Manual PDF 函数 Set duration between pages [deprecated] PDF_set_duration (PHP 4, PECL pdflib >= 1.0.0) PDF_set_duration — Set duration between pages [deprecated] 说明 This function is deprecated since PDFlib version 3, use the duration option in PDF_begin_page_ext() or PDF_end_page_ext() instead.