php给pdf加上水印

环境

php5.5.12 fpdi-1.5.2 fpdf-1.7

原理

利用fpdi来加载已知pdf文件，用fpdf对pdf进行操作

注意事项

免费的fpdi只支持处理pdf1.4及以下版本，1.5以上就需要用到FPDI PDF-Parser插件

使用方法

fpdi-1.5.2 fpdf-1.7

1.文字水印 word.php

?

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

<!--?php

 

require_once('./fpdf/fpdf.php');

require_once('./fpdi/fpdi.php');

 

 

//word_watermark

$pdf = newFPDI();

 

// get the page count

$pageCount = $pdf--->setSourceFile('more.pdf');

 

// iterate through all pages

for($pageNo = 1; $pageNo <= $pageCount; $pageNo++)

{

    // import a page

    $templateId = $pdf->importPage($pageNo);

 

    // get the size of the imported page

    $size = $pdf->getTemplateSize($templateId);

 

    // create a page (landscape or portrait depending on the imported page size)

    if($size['w'] > $size['h']) $pdf->AddPage('L', array($size['w'], $size['h']));

    else$pdf->AddPage('P', array($size['w'], $size['h']));

 

    // use the imported page

    $pdf->useTemplate($templateId);

 

 

    $pdf->SetFont('Arial','B','12');

    // sign with current date

    $pdf->SetXY(0,0);// you should keep testing untill you find out correct x,y values

    $pdf->Write(7, date('Y-m-d'));

 

}

$pdf->Output('word.pdf');

2.图片水印 pic.php

?

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

<!--?php

 

require_once('./fpdf/fpdf.php');

require_once('./fpdi/fpdi.php');

 

 

//pic_watermark

$pdf = newFPDI();

// get the page count

$pageCount = $pdf--->setSourceFile('more.pdf');

 

// iterate through all pages

for($pageNo = 1; $pageNo <= $pageCount; $pageNo++)

{

    // import a page

    $templateId = $pdf->importPage($pageNo);

 

    // get the size of the imported page

    $size = $pdf->getTemplateSize($templateId);

 

    // create a page (landscape or portrait depending on the imported page size)

    if($size['w'] > $size['h']) $pdf->AddPage('L', array($size['w'], $size['h']));

    else$pdf->AddPage('P', array($size['w'], $size['h']));

 

    // use the imported page

    $pdf->useTemplate($templateId);

 

    // Place the graphics

    $pdf->image("test.png",75,85,50);

 

}

$pdf->Output('pic.pdf');