| <?php
namespace services\info;
use services\CommonService;
use services\users\UserService;
use setasign\Fpdi\Fpdi;
use yii\db\Exception;
use yii\helpers\FileHelper;
/**
* PDF文件处理服务类
* Class Pdf2PicService
* @package services\info
* @author: luwc
* @Time: 2022/2/7 10:45
*/
class Pdf2PicService
{
/**
* 将pdf每页转化为图并增加水印（优化版）
* @param $pdf_file
* @param string $warter_text
* @param int $quality
* @param string $picExtension
* @return string
* @throws Exception
* @throws \ImagickException
* @throws \setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException
* @throws \setasign\Fpdi\PdfParser\Filter\FilterException
* @throws \setasign\Fpdi\PdfParser\PdfParserException
* @throws \setasign\Fpdi\PdfParser\Type\PdfTypeException
* @throws \setasign\Fpdi\PdfReader\PdfReaderException
* @throws \yii\base\Exception
* @author: luwc
* @Time: 2022/2/7 9:31
*/
public static function pdf2PngAllWarterAndOss($pdf_file, $warter_text = 'xxxxxxx资料', $quality = 100, $picExtension = 'png')
{
$path = PROJECT_PATH . "/data/pdftmp/pic/";
FileHelper::createDirectory(PROJECT_PATH . "/data/pdftmp/");
FileHelper::createDirectory($path);
$pdf = new Fpdi();
//获取页数
$pageCount = $pdf->setSourceFile($pdf_file);
@ini_set('memory_limit', '1024M');
$ossPath = [];
//遍历所有页面
for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
//导入页面
$templateId = $pdf->importPage($pageNo);
//获取导入页面的大小
$size = $pdf->getTemplateSize($templateId);
//创建页面（横向或纵向取决于导入的页面大小）
if ($size['width'] > $size['height']) {
$pdf->AddPage('L', array($size['width'], $size['height']));
} else {
$pdf->AddPage('P', array($size['width'], $size['height']));
}
echo '第' . $pageNo . '页' . PHP_EOL;
$pic = self::pdf2png($pdf_file, PROJECT_PATH . "/data/pdftmp/pic/", ($pageNo - 1), $quality, $picExtension);
if (!empty($warter_text)) {
$canvas = new \Imagick($pic);
$width = $canvas->getImageWidth();
$height = $canvas->getImageHeight();
$fontsize = 26;
$imagickPixel = new \ImagickPixel('rgba(204, 204, 204, 0.5)');
$font = VENDOR_PATH . '/../common/services/font/simsun.ttc';
for ($i = 0; $i < ceil($height / 96); $i++) {
$x = max([rand(0, $width / 2), rand(0, $width / 2)]) - 48;
$y = $i * 200 + 96;
$draw = new \ImagickDraw();
$draw->setFont($font);
$draw->setFontSize($fontsize);
$draw->setFillColor($imagickPixel);
$canvas->annotateImage($draw, $x, $y, -22, $warter_text);
}
$canvas->writeImage($pic);
}
$fileInfo = pathinfo($pic);
$ossPath[] = CommonService::uploadFile($pic, $fileInfo['basename']);
}
FileHelper::removeDirectory(PROJECT_PATH . "/data/pdftmp/pic/");
@unlink($pdf_file);
unset($pdf);
return $ossPath;
}
/**
* 处理PDF文件
* 将PDF内容生成图片并将图片传OSS(质量差)
* @param $pdf_file
* @param string $warter_text
* @param int $type
* @return array
* @throws \Exception
* @author: luwc
* @Time: 2022/2/7 15:46
*/
public static function pdfWarter2PicAndOss($pdf_file, $warter_text = 'xxxxxx资料', $type = 2)
{
try {
FileHelper::createDirectory(PROJECT_PATH . "/data/pdftmp/");
FileHelper::createDirectory(PROJECT_PATH . "/data/pdftmp/pic/");
$pdf = new Fpdi();
$pdf_new = new Fpdi();
//获取页数
$pageCount = $pdf->setSourceFile($pdf_file);
$flag = false;
@ini_set('memory_limit', '1024M');
//遍历所有页面
for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
//导入页面
$templateId = $pdf->importPage($pageNo);
//获取导入页面的大小
$size = $pdf->getTemplateSize($templateId);
//创建页面（横向或纵向取决于导入的页面大小）
if ($size['width'] > $size['height']) {
$pdf->AddPage('L', array($size['width'], $size['height']));
$pdf_new->AddPage('L', array($size['width'], $size['height']));
} else {
$pdf->AddPage('P', array($size['width'], $size['height']));
$pdf_new->AddPage('P', array($size['width'], $size['height']));
}
echo '第' . $pageNo . '页' . PHP_EOL;
$pic = self::pdf2png($pdf_file, PROJECT_PATH . "/data/pdftmp/pic/", ($pageNo - 1), 50);
$pdf_new->Image($pic, 0, 0, $size['width']);
if ($flag === false) {
self::pngThumb($warter_text, $size['width'] * 25, $size['height'] * 25);
}
$flag = true;
//使用导入的页面
$pdf->useTemplate($templateId);
/*// Set font
$pdf->SetFont('Arial', 'B', 16);
// Move to 8 cm to the right
$pdf->Cell(80);
// Centered text in a framed 20*10 mm cell and line break
$pdf->Cell(20, 10, 'Title', 1, 1, 'C');*/
if ($type == 1) {
//文字水印
//不能调整角色，放弃它了
//设置字体
//$pdf->SetFont('Arial','B','24');
$family = ['courier', 'helvetica', 'times', 'symbol', 'zapfdingbats'];
$pdf_new->SetFont('helvetica', 'U', '50');
//设置位置 - 加在中间位置
$center_x = $size['width'] / 2;
$center_y = $size['height'] / 2;
$pdf_new->SetXY($center_x - 200, $center_y + 50);
//写入水印 - 中文会乱码 建议使用中文图片
$pdf_new->Write(7, 'ROOT_ICO');
} else {
//图片水印
// $center_x = $size['width'] / 2 - 40;
// $center_y = $size['height'] / 2;
// $pdf->image(PROJECT_PATH."/public/warter.png", $center_x, $center_y, 80);//中间水印
$pdf_new->image(PROJECT_PATH . "/data/pdftmp/warter.png", 0, 0, $size['width']);//全屏背景水印
}
}
unset($pdf);
// I输出output，D下载download，F保存file_put_contents，S返回return
// $pdf->Output('I','测试水印',true);
$info = pathinfo($pdf_file);
$newFile = $info['dirname'] . '/1_' . $info['basename'];
@unlink($newFile);
$pdf_new->Output('F', $newFile, true);
unset($pdf_new);
$pdf = new Fpdi();
//获取页数
$pageCount = $pdf->setSourceFile($newFile);
@ini_set('memory_limit', '1024M');
//遍历所有页面生成图片地址
$ossPath = [];
for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
//导入页面
$templateId = $pdf->importPage($pageNo);
//获取导入页面的大小
$size = $pdf->getTemplateSize($templateId);
//创建页面（横向或纵向取决于导入的页面大小）
if ($size['width'] > $size['height']) {
$pdf->AddPage('L', array($size['width'], $size['height']));
} else {
$pdf->AddPage('P', array($size['width'], $size['height']));
}
echo '第2-' . $pageNo . '页' . PHP_EOL;
$localUrl = self::pdf2png($newFile, PROJECT_PATH . "/data/pdftmp/pic/", ($pageNo - 1), 50);
$fileInfo = pathinfo($localUrl);
$ossPath[] = CommonService::uploadFile($localUrl, $fileInfo['basename']);
}
//
FileHelper::removeDirectory(PROJECT_PATH . "/data/pdftmp/pic/");
@unlink(PROJECT_PATH . "/data/pdftmp/warter.png");
@unlink($newFile);
@unlink($pdf_file);
unset($pdf);
echo '完成' . PHP_EOL;
return $ossPath;
} catch (\Exception $e) {
throw new \Exception($e->getMessage());
}
}
/**
* 处理PDF文件
* 将PDF内容生成图片并生成新的加密
* @param $pdf_file
* @param string $warter_text
* @param int $type
* @return string
* @throws \Exception
* @author: luwc
* @Time: 2022/2/7 15:46
*/
public static function pdfWarter2Pic($pdf_file, $warter_text = 'xxxxxxx资料', $type = 2)
{
try {
FileHelper::createDirectory(PROJECT_PATH . "/data/pdftmp/");
FileHelper::createDirectory(PROJECT_PATH . "/data/pdftmp/pic/");
$pdf = new Fpdi();
$pdf_new = new Fpdi();
//获取页数
$pageCount = $pdf->setSourceFile($pdf_file);
$flag = false;
@ini_set('memory_limit', '1024M');
//遍历所有页面
for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
//导入页面
$templateId = $pdf->importPage($pageNo);
//获取导入页面的大小
$size = $pdf->getTemplateSize($templateId);
//创建页面（横向或纵向取决于导入的页面大小）
if ($size['width'] > $size['height']) {
$pdf->AddPage('L', array($size['width'], $size['height']));
$pdf_new->AddPage('L', array($size['width'], $size['height']));
} else {
$pdf->AddPage('P', array($size['width'], $size['height']));
$pdf_new->AddPage('P', array($size['width'], $size['height']));
}
echo '第' . $pageNo . '页' . PHP_EOL;
$pic = self::pdf2png($pdf_file, PROJECT_PATH . "/data/pdftmp/pic/", ($pageNo - 1), 50);
$pdf_new->Image($pic, 0, 0, $size['width']);
if ($flag === false) {
self::pngThumb($warter_text, $size['width'] * 25, $size['height'] * 25);
}
$flag = true;
//使用导入的页面
$pdf->useTemplate($templateId);
/*// Set font
$pdf->SetFont('Arial', 'B', 16);
// Move to 8 cm to the right
$pdf->Cell(80);
// Centered text in a framed 20*10 mm cell and line break
$pdf->Cell(20, 10, 'Title', 1, 1, 'C');*/
if ($type == 1) {
//文字水印
//不能调整角色，放弃它了
//设置字体
//$pdf->SetFont('Arial','B','24');
$family = ['courier', 'helvetica', 'times', 'symbol', 'zapfdingbats'];
$pdf_new->SetFont('helvetica', 'U', '50');
//设置位置 - 加在中间位置
$center_x = $size['width'] / 2;
$center_y = $size['height'] / 2;
$pdf_new->SetXY($center_x - 200, $center_y + 50);
//写入水印 - 中文会乱码 建议使用中文图片
$pdf_new->Write(7, 'ROOT_ICO');
} else {
//图片水印
// $center_x = $size['width'] / 2 - 40;
// $center_y = $size['height'] / 2;
// $pdf->image(PROJECT_PATH."/public/warter.png", $center_x, $center_y, 80);//中间水印
$pdf_new->image(PROJECT_PATH . "/data/pdftmp/warter.png", 0, 0, $size['width']);//全屏背景水印
}
}
unset($pdf);
// I输出output，D下载download，F保存file_put_contents，S返回return
// $pdf->Output('I','测试水印',true);
$info = pathinfo($pdf_file);
$newFile = $info['dirname'] . '/1_' . $info['basename'];
@unlink($newFile);
$pdf_new->Output('F', $newFile, true);
unset($pdf_new);
// 安全处理
$pdf_new = new \setasign\Fpdi\Tcpdf\Fpdi();
$pdf_new->SetAuthor('xxxx', true);
$pdf_new->SetCreator('xxx', true);
$pdf_new->SetSubject('xxx', true);
$pdf_new->SetKeywords('xxx', true);
$pdf_new->SetTitle($warter_text, true);
$pdf_new->SetCompression(true);
$pdf_new->setSourceFile($newFile);
$pdf_new->SetProtection(['print', 'modify', 'copy', 'annot-forms', 'fill-forms', 'extract', 'assemble', 'print-high'], '', 'xxxx');//遍历所有页面
for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
//导入页面
$templateId = $pdf_new->importPage($pageNo);
//获取导入页面的大小
$size = $pdf_new->getTemplateSize($templateId);
//创建页面（横向或纵向取决于导入的页面大小）
if ($size['width'] > $size['height']) {
$pdf_new->AddPage('L', array($size['width'], $size['height']));
} else {
$pdf_new->AddPage('P', array($size['width'], $size['height']));
}
//使用导入的页面
$pdf_new->useTemplate($templateId);
}
$newFile2 = $info['dirname'] . '/2_' . $info['basename'];
$pdf_new->Output($newFile2, 'F');
//
FileHelper::removeDirectory(PROJECT_PATH . "/data/pdftmp/pic/");
@unlink(PROJECT_PATH . "/data/pdftmp/warter.png");
@unlink($newFile);
unset($pdf_new);
// echo '完成' . PHP_EOL;
return $newFile2;
} catch (\Exception $e) {
throw new \Exception($e->getMessage());
}
}
/**
* 将某页PDF文件转成图片
* @param $pdf PDF文件绝对路径
* @param $path 图片临时目录
* @param int $page pdf页
* @param int $quality 质量默认100
* @param string $picExtension 图片文件扩展名
* @return array|string
* @throws Exception
* @throws \ImagickException
* @author: luwc
* @Time: 2022/1/24 13:18
*/
public static function pdf2png($pdf, $path, $page = 0, $quality = 100, $picExtension = 'jpg')
{
try {
$im = new \Imagick();
$im->setResolution(120, 120); //设置图像分辨率
$im->setCompressionQuality($quality); //压缩比
$im->readImage($pdf . "[" . $page . "]"); //设置读取pdf的第一页
//$im->thumbnailImage(200, 100, true);//改变图像的大小
//$im->scaleImage(200,100,true);//缩放大小图像
$filename = $path . "/" . md5(time()) . '-' . $page . '.' . $picExtension;
if ($im->writeImage($filename) == true) {
$Return = $filename;
}
return $Return;
} catch (PDOException $e) {
throw new Exception('数据处理失败' . $e->getMessage());
}
}
/**
* 暂没用
* 将pdf转化为一个大长图
* @param $pdf pdf所在路径 （/www/pdf/abc.pdf pdf所在的绝对路径）
* @param $path 新生成图片所在路径 (/www/pngs/)
* @param int $quality
* @param string $picExtension
* @return string
* @throws \ImagickException
* @author: luwc
* @Time: 2022/2/7 9:31
*/
public static function pdf2PngAll($pdf, $path, $quality = 100, $picExtension = 'jpg')
{
$im = new \Imagick();
$im->setCompressionQuality($quality);
$im->setResolution(120, 120);//设置分辨率 值越大分辨率越高
$im->readImage($pdf);
$canvas = new \Imagick();
$imgNum = $im->getNumberImages();
foreach ($im as $k => $sub) {
$sub->setImageFormat($picExtension);
//$sub->setResolution(120, 120);
$sub->stripImage();
$sub->trimImage(0);
$width = $sub->getImageWidth() + 10;
$height = $sub->getImageHeight() + 10;
if ($k + 1 == $imgNum) {
$height += 10;
} //最后添加10的height
$canvas->newImage($width, $height, new \ImagickPixel('white'));
$canvas->compositeImage($sub, \Imagick::COMPOSITE_DEFAULT, 5, 5);
}
$canvas->resetIterator();
$picPath = sprintf('%s%s.%s', $path, self::getRandStr(), $picExtension);
$canvas->appendImages(true)->writeImage($picPath);
return $picPath;
}
/**
* 暂没用
* @return false|string
* @author: luwc
* @Time: 2022/2/7 10:59
*/
public static function getRandStr()
{
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890';
$randStr = str_shuffle($str);//打乱字符串
$rands = substr($randStr, 0, 6);
return $rands;
}
/**
* 水印图片
* @param string $warter_text
* @param $width
* @param $heigh
* @author: luwc
* @Time: 2022/1/24 12:40
*/
public static function pngThumb($warter_text = 'xxxxx', $width, $heigh)
{
$fontsize = 140;
$font = VENDOR_PATH . '/../common/services/font/simsun.ttc';
$warter = imagecreatetruecolor($width, $heigh);
$src_white = imagecolorallocatealpha($warter, 255, 255, 255, 127);
imagefill($warter, 0, 0, $src_white);//替换成白色
imagecolortransparent($warter, $src_white); //将原图颜色替换为透明色
imagealphablending($warter, false);//这里很重要,意思是不合并颜色,直接用$img图像颜色替换,包括透明色;
imagesavealpha($warter, true);//这里很重要,意思是不要丢了$thumb图像的透明色;
$fontcolor = imagecolorallocate($warter, 204, 204, 204);
for ($i = 0; $i < ceil($heigh / 1200); $i++) {
$x = max([rand(0, $width / 2), rand(0, $width / 2)]) - 400;
$y = $i * 1200 + 400;
imagettftext($warter, $fontsize, 22, $x, $y, $fontcolor, $font, mb_convert_encoding($warter_text, 'HTML-ENTITIES', 'UTF-8'));
}
imagepng($warter, PROJECT_PATH . '/data/pdftmp/warter.png');
imagedestroy($warter);
}
}
| 
博客介绍了使用PHP处理PDF文件的相关内容，包括将FPDI与FPDF、TCPDF、tfPDF结合使用的配置，在Linux环境下安装扩展的步骤，强调了ghostscript的必要性。还提及用TCPDF给PDF加密及设置访问密码，以及解决ImageMagick 'not authorized' PDF Error的方法。
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