pdflib.php

《PHP和MySQL Web开发》(第三版) Source

<?php
  // create short variable names
  $name = $_POST['name'];
  $score = $_POST['score'];

  if(!$name||!$score)
  {
    echo '<h1>Error:</h1><p>This page was called incorrectly</p>';
    exit;
  }
  else
  {
    $date = date( 'F d, Y' );

    // create a pdf document in memory
    $pdf = pdf_new();
    pdf_open_file($pdf);

    // set up name of font for later use
    $fontname = 'Times-Roman';

    // set up the page size in points and create page
    // US letter is 11" x 8.5" and there are approximately 72 points per inch
    $width = 11*72;
    $height = 8.5*72;
    pdf_begin_page($pdf, $width, $height);

    // draw our borders
    $inset = 20; // space between border and page edge
    $border = 10; // width of main border line
    $inner = 2; // gap within the border

    //draw outer border
    pdf_rect($pdf, $inset-$inner,
                   $inset-$inner,
                   $width-2*($inset-$inner),
                   $height-2*($inset-$inner));
    pdf_stroke($pdf);

    //draw main border $border points wide
    pdf_setlinewidth($pdf, $border);
    pdf_rect($pdf, $inset+$border/2,
                   $inset+$border/2,
                   $width-2*($inset+$border/2),
                   $height-2*($inset+$border/2));
    pdf_stroke($pdf);
    pdf_setlinewidth($pdf, 1.0);

    // draw inner border
    pdf_rect($pdf, $inset+$border+$inner,
                   $inset+$border+$inner,
                   $width-2*($inset+$border+$inner),
                   $height-2*($inset+$border+$inner));
    pdf_stroke($pdf);

    // add heading
    $font = pdf_findfont($pdf, $fontname, 'host', 0);
    if ($font)
      pdf_setfont($pdf, $font, 48);
    $startx = ($width - pdf_stringwidth($pdf, 'PHP Certification'))/2;
    pdf_show_xy($pdf, 'PHP Certification', $startx, 490);

    // add text
    $font = pdf_findfont($pdf, $fontname, 'host', 0);
    if ($font)
      pdf_setfont($pdf, $font, 26);
    $startx = 70;
    pdf_show_xy($pdf, 'This is to certify that:', $startx, 430);
    pdf_show_xy($pdf, strtoupper($name), $startx+90, 391);

    $font = pdf_findfont($pdf, $fontname, 'host', 0);
    if ($font)
      pdf_setfont($pdf, $font, 20);

    pdf_show_xy($pdf, 'has demonstrated that they are certifiable '.
                      'by passing a rigorous exam', $startx, 340);
    pdf_show_xy($pdf, 'consisting of three multiple choice questions.',
                       $startx, 310);

    pdf_show_xy($pdf, "$name obtained a score of $score".'%.', $startx, 260);

    pdf_show_xy($pdf, 'The test was set and overseen by the ', $startx, 210);
    pdf_show_xy($pdf, 'Fictional Institute of PHP Certification',
                      $startx, 180);
    pdf_show_xy($pdf, "on $date.", $startx, 150);
    pdf_show_xy($pdf, 'Authorised by:', $startx, 100);

    // add bitmap signature image
    $signature = pdf_open_image_file($pdf, 'png', 'signature.png');
    pdf_place_image($pdf, $signature, 200, 75, 1);
    pdf_close_image($pdf, $signature);

    // set up colors for rosette
    pdf_setrgbcolor_fill($pdf, 0, 0, .4);  //dark blue
    pdf_setrgbcolor_stroke($pdf, 0, 0, 0);  // black

    // draw ribbon 1
    pdf_moveto($pdf, 630, 150);
    pdf_lineto($pdf, 610, 55);
    pdf_lineto($pdf, 632, 69);
    pdf_lineto($pdf, 646, 49);
    pdf_lineto($pdf, 666, 150);
    pdf_closepath($pdf);
    pdf_fill($pdf);

    // outline ribbon 1
    pdf_moveto($pdf, 630, 150);
    pdf_lineto($pdf, 610, 55);
    pdf_lineto($pdf, 632, 69);
    pdf_lineto($pdf, 646, 49);
    pdf_lineto($pdf, 666, 150);
    pdf_closepath($pdf);
    pdf_stroke($pdf);

    // draw ribbon 2
    pdf_moveto($pdf, 660, 150);
    pdf_lineto($pdf, 680, 49);
    pdf_lineto($pdf, 695, 69);
    pdf_lineto($pdf, 716, 55);
    pdf_lineto($pdf, 696, 150);
    pdf_closepath($pdf);
    pdf_fill($pdf);

    // outline ribbon 2
    pdf_moveto($pdf, 660, 150);
    pdf_lineto($pdf, 680, 49);
    pdf_lineto($pdf, 695, 69);
    pdf_lineto($pdf, 716, 55);
    pdf_lineto($pdf, 696, 150);
    pdf_closepath($pdf);
    pdf_stroke($pdf);

    pdf_setrgbcolor_fill($pdf, .8, 0, 0);  //red

    //draw rosette
    draw_star(665, 175, 32, 57, 10, $pdf, true);

    //outline rosette
    draw_star(665, 175, 32, 57, 10, $pdf, false);

    // finish up the page and prepare to output
    pdf_end_page($pdf);
    pdf_close($pdf);
    $data = pdf_get_buffer($pdf);

    // generate the headers to help a browser choose the correct application
    header('Content-type: application/pdf');
    header('Content-disposition: inline; filename=test.pdf');
    header('Content-length: ' . strlen($data));
    
    // output PDF
    echo $data;
  }

  function draw_star($centerx, $centery, $points, $radius, 
                     $point_size, $pdf, $filled)
  {
    $inner_radius = $radius-$point_size;

    for ($i = 0; $i<=$points*2; $i++ )
    {
      $angle= ($i*2*pi())/($points*2);

      if($i%2)
      {
        $x = $radius*cos($angle) + $centerx;
        $y = $radius*sin($angle) + $centery;
      }
      else
      {
        $x = $inner_radius*cos($angle) + $centerx;
        $y = $inner_radius*sin($angle) + $centery;
      }
      if($i==0)
        pdf_moveto($pdf, $x, $y);
      else if($i==$points*2)
        pdf_closepath($pdf);
      else
        pdf_lineto($pdf, $x, $y);
    }
    if($filled)
      pdf_fill_stroke($pdf);
    else
      pdf_stroke($pdf);
  }
?>