PDF_save()
(PHP 4, PECL pdflib >= 1.0.0)
Save graphics state
说明
PDF_save(resource $p): bool
Saves the current graphics state.成功时返回TRUE
,或者在失败时返回FALSE
。
By playing around with this you'll get a better understanding of what pdf_save and pdf_restore do. <?php //Create & Open PDF-Object $pdf = pdf_new(); pdf_open_file($pdf); pdf_set_info($pdf, "Author","Bob Nijman"); pdf_set_info($pdf, "Title","Sponsored by www.nijman.de"); pdf_set_info($pdf, "Creator", "See Author"); pdf_set_info($pdf, "Subject", "pdf_restore"); pdf_begin_page($pdf, 300, 300); /* By encapsulating the changes we make to the coordinate system (pdf_translate() and pdf_rotate()) between pdf_save() and pdf_restore we give these changes only local scope. */ /* SMALL RECTANGLE */ pdf_save($pdf); //move the origin of the coordinate system to (100,100) pdf_translate($pdf, 100, 100); //Rotate the coordinate system by 45 degrees. pdf_rotate($pdf, 45); //Draw a samll rectangle pdf_rect($pdf, 0, 0, 20, 20); pdf_stroke($pdf); //Restore the graphics state to the way it was //before we started to translate and rotate pdf_restore($pdf); /* LARGER RECTANGLE */ pdf_save($pdf); //move the origin of the coordinate system to (10,20) pdf_translate($pdf, 10, 20); //Rotate the coordinate system by 15 degrees. pdf_rotate($pdf, 15); //Draw a larger rectangle pdf_rect($pdf, 0, 0, 40, 40); pdf_stroke($pdf); //Restore the graphics state to the way it was //before we started to translate and rotate pdf_restore($pdf); //close it up pdf_end_page($pdf); pdf_close($pdf); $data = pdf_get_buffer($pdf); header('Content-type: application/pdf'); header('Content-disposition: inline; filename=nijman.pdf'); header('Content-length: ' . strlen($data)); echo $data; ?> Thanx to: http://www.dynamicwebpages.de/50.tutorials.php?dwp_tutorialID=11