【发布时间】：2011-10-05 02:20:00
【问题描述】：
PHP 我有一个简单的课程申请表，填写后，会向申请人发送一封电子邮件，其中包含他选择的课程的费用报价作为 pdf 附件。
我正在使用 TCPDF，并使用会话变量将数据从表单传递到库。内容为html格式。
PDF 是根据需要生成并作为附件发送的，问题是它是空白的。文档中只有页眉和页脚。在 linux 中尤其如此。在 Windows 中，pdf 文档在下载时会按预期生成。但是，当您在下载文档之前单击“查看”时，仅显示页眉和页脚。
这是我的代码。请有人帮忙。谢谢。
<?php
session_start();
require_once('../config/lang/eng.php');
require_once('../tcpdf.php');
// create new PDF document
$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
// set document information
$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor('Josiah Njuki');
$pdf->SetTitle('Quotation Request');
$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_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
$pdf->setLanguageArray($l);
// ---------------------------------------------------------
// set default font subsetting mode
$pdf->setFontSubsetting(true);
// Set font
// dejavusans is a UTF-8 Unicode font, if you only need to
// print standard ASCII chars, you can use core fonts like
// helvetica or times to reduce file size.
$pdf->SetFont('dejavusans', '', 14, '', true);
// Add a page
// This method has several options, check the source code documentation for more information.
$pdf->AddPage();
// Set some content to print
$html = '<span style="font-size:7pt;">' . $_SESSION['content'] . '</span>';
$html .= <<<EOD
EOD;
// Print text using writeHTMLCell()
$pdf->writeHTMLCell($w=0, $h=0, $x='', $y='', $html, $border=0, $ln=1, $fill=0, $reseth=true, $align='', $autopadding=true);
// ---------------------------------------------------------
// Close and output PDF document
// This method has several options, check the source code documentation for more information.
//$pdf->Output('example_001.pdf', 'I');
$doc = $pdf->Output('quotation.pdf', 'S');
//define the receiver of the email
$name = "Name goes here";
$email = "jnjuki103@gmail.com";
$to = "$name <{$_SESSION['email']}>";
$from = "John-Smith ";
$subject = "Here is your attachment";
$fileatt = $pdf->Output('quotation.pdf', 'S');
//$fileatt = "./test.pdf";
$fileatttype = "application/pdf";
$fileattname = "newname.pdf";
$headers = "From: $from";
$file = fopen($fileatt, 'rb');
$data = fread($file, filesize($fileatt));
fclose($file);
$semi_rand = md5(time());
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";
$headers .= "\nMIME-Version: 1.0\n" .
"Content-Type: multipart/mixed;\n" .
" boundary=\"{$mime_boundary}\"";
$message = "This is a multi-part message in MIME format.\n\n" .
"-{$mime_boundary}\n" .
"Content-Type: text/plain; charset=\"iso-8859-1\n" .
"Content-Transfer-Encoding: 7bit\n\n" .
$message .= "\n\n";
$data = chunk_split(base64_encode($data));
$message .= "–{$mime_boundary}\n" .
"Content-Type: {$fileatttype};\n" .
" name=\"{$fileattname}\"\n" .
"Content-Disposition: attachment;\n" .
" filename=\"{$fileattname}\"\n" .
"Content-Transfer-Encoding: base64\n\n" .
$data . "\n\n" .
"-{$mime_boundary}-\n";
if (mail($to, $subject, $message, $headers)) {
echo "The email was sent.";
} else {
echo "There was an error sending the mail.";
}
//============================================================+
// END OF FILE
//============================================================+
【问题讨论】：
-
你确定
$_SESSION['content']在php生成的时候不为空吗？