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我有这段代码生成一个样式表，但使用PHP从数据库中获取表的信息。PHP和风格的HTML表格到PDF
<form name="pt_list" action="classes/MYPDF.php" method="post"><br/>
<input type="submit" name="pdf" value="Download as PDF">
</form>
<?php
ob_start();
?>
<table id=patients>
<tr>
<th>Pt. username</th>
<th>Pt. number</th>
<th>Full Name</th>
<th>Added on</th>
</tr>
<?php $x=1;
foreach ($users as $patient) {
?> <tr <?php if ($x % 2 == 0) {echo "class='alt'"; } ?>>
<td> <a href="profile.php?username=<?php echo $patient['username'];?>"><?php echo $patient['username'];?></a></td>
<td> <?php echo $patient['id'];?></td>
<td> <?php echo $patient['name'];?></td>
<td> <?php echo $patient['joined'];?></td>
</tr>
<?php
$x++;
} ?>
</table>
<?php
$GLOBALS['table'] = ob_get_clean();
$table = $GLOBALS['table'];
?>
我想抓住这张表，并提供给用户下载为PDF。我试过tcpdf和fpdf，但总是不断地发送pdf，输出已经发送。这里是我的MYPDF.php代码：
<?php
//============================================================+
// File name : example_003.php
// Begin : 2008-03-04
// Last Update : 2013-05-14
//
// Description : Example 003 for TCPDF class
// Custom Header and Footer
//
// Author: Nicola Asuni
//
// (c) Copyright:
// Nicola Asuni
// Tecnick.com LTD
// www.tecnick.com
// [email protected]
//============================================================+
/**
* Creates an example PDF TEST document using TCPDF
* @package com.tecnick.tcpdf
* @abstract TCPDF - Example: Custom Header and Footer
* @author Nicola Asuni
* @since 2008-03-04
*/
// Include the main TCPDF library (search for installation path).
require_once('../tcpdf/tcpdf.php');
// Extend the TCPDF class to create custom Header and Footer
class MYPDF extends TCPDF {
//Page header
public function Header() {
// Logo
$image_file = K_PATH_IMAGES.'logo_example.jpg';
$this->Image($image_file, 10, 10, 15, '', 'JPG', '', 'T', false, 300, '', false, false, 0, false, false, false);
// Set font
$this->SetFont('helvetica', 'B', 20);
// Title
$this->Cell(0, 15, '<< TCPDF Example 003 >>', 0, false, 'C', 0, '', 0, false, 'M', 'M');
}
// Page footer
public function Footer() {
// Position at 15 mm from bottom
$this->SetY(-15);
// Set font
$this->SetFont('helvetica', 'I', 8);
// Page number
$this->Cell(0, 10, 'Page '.$this->getAliasNumPage().'/'.$this->getAliasNbPages(), 0, false, 'C', 0, '', 0, false, 'T', 'M');
}
}
// create new PDF document
$pdf = new MYPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
// set document information
$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor('Nicola Asuni');
$pdf->SetTitle('TCPDF Example 003');
$pdf->SetSubject('TCPDF Tutorial');
$pdf->SetKeywords('TCPDF, PDF, example, test, guide');
// set default header data
$pdf->SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, PDF_HEADER_TITLE, PDF_HEADER_STRING);
// set header and footer fonts
$pdf->setHeaderFont(Array(PDF_FONT_NAME_MAIN, '', PDF_FONT_SIZE_MAIN));
$pdf->setFooterFont(Array(PDF_FONT_NAME_DATA, '', PDF_FONT_SIZE_DATA));
// set default monospaced font
$pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);
// set margins
$pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
$pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
$pdf->SetFooterMargin(PDF_MARGIN_FOOTER);
// set auto page breaks
$pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);
// set image scale factor
$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
// set some language-dependent strings (optional)
if (@file_exists(dirname(__FILE__).'/lang/eng.php')) {
require_once(dirname(__FILE__).'/lang/eng.php');
$pdf->setLanguageArray($l);
}
// ---------------------------------------------------------
// set font
$pdf->SetFont('times', 'BI', 12);
// add a page
$pdf->AddPage();
// set some text to print
// print a block of text using Write()
$pdf->writeHTML($GLOBALS['table'], true, false, true, false, '');
// ---------------------------------------------------------
//Close and output PDF document
$pdf->Output('example_003.pdf', 'D');
//============================================================+
// END OF FILE
这是我的错误：注意：未定义指数：表中/Users/Tika/PhpstormProjects/ooplr/classes/MYPDF.php线105 TCPDF ERROR ：有些数据已经输出，不能发送PDF文件。 任何输入将不胜感激。