我想试用FPDF， XAMPP 它运行得很好，但是当我将它上传到我的网络服务器时，它说错误：
警告：include（/font/helveticab.php）：无法打开流：/comeromers/9/f/c/dynamistic.de/httpd.www/websites/testauftrag/fpdf.php中没有此类文件或目录在1147行警告：include（）：打开失败＆＃39; /font/helveticab.php'在第1147行的/customers/9/f/c/dynamistic.de/httpd.www/websites/testauftrag/fpdf.php中包含（include_path =＆＃39;。：/ usr / share / php＆＃39;）致命错误：未捕获异常：FPDF错误：无法在/customers/9/f/c/dynamistic.de/httpd.www/websites/testauftrag/fpdf.php:275中包含字体定义文件堆栈跟踪：＃0 / customers / 9 /f/c/dynamistic.de/httpd.www/websites/testauftrag/fpdf.php(1149）：FPDF-＆gt;错误（＆＃39;无法包括......＆＃39;）＃1 / customers / 9 / f / c / dynamistic.de / httpd.www / websites / testauftrag / fpdf.php（463）：FPDF-＆gt; _loadfont（＆＃39; helveticab.php＆＃39;）＃2 / customers / 9 / f /c/dynamistic.de/httpd.www/websites/testauftrag/fpdf.php(511）：FPDF-＆gt; AddFont（＆＃39; helvetica＆＃39;，＆＃39; B＆＃39;）＃3 / customers /9/f/c/dynamistic.de/httpd.www/websites/testauftrag/rechnung.php(14):FPDF-＆gt; SetFont（＆＃39; helvetica＆＃39;，＆＃39; B＆＃39;， 15）＃4 /customers/9/f/c/dynamistic.de/httpd.www/websites/testauftrag/fpdf.php(338):PDF-＆gt; Header（）＃5 / customers / 9 / f / c / dynamistic.de/httpd.www/websites/testauftrag/ rechnung.php（65）：FPDF-＆gt; AddPage（）＃6 {main}在第275行的/comersomers/9/f/c/dynamistic.de/httpd.www/websites/testauftrag/fpdf.php中抛出
这是导致错误的fpdf.php部分：
protected function _loadfont($font)
{
// Load a font definition file from the font directory
if(strpos($font,'/')!==false || strpos($font,"\\")!==false)
$this->Error('Incorrect font definition file name: '.$font);
include($this->fontpath.$font);
if(!isset($name))
$this->Error('Could not include font definition file');
if(isset($enc))
$enc = strtolower($enc);
if(!isset($subsetted))
$subsetted = false;
return get_defined_vars();
}