php如何给pdf加上文字水印和图片水印[未测试]

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

<?php

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

//word_watermark $pdf = new FPDI();

// 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

<?php

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

//pic_watermark $pdf = new FPDI(); // 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'); 3.项目地址

pdf_watermark

https://github.com/laiyuxiang/pdf_watermark/