我使用FPDF创建PDF。我可以使用Chrome打开pdf，但是下载此文件后，当我使用Adobe Reader打开它时，此处显示空白页，没有数据，并显示错误消息“处理页面时出错。阅读此文档时出现问题（18） ”。我在下面添加了我的代码，任何人都可以帮助我解决此问题。
require('fpdf.php');
//A4 width : 219mm
//default margin : 10mm each side
//writable horizontal : 219-(10*2)=189mm
//create pdf object
$pdf = new FPDF('L','mm','A4');
//add new page
$pdf->AddPage();
//set font to arial, bold, 14pt
$pdf->SetFont('Arial','B',14);
$pdf->Cell(70 ,5);
$pdf->Cell(55 ,5,'TAX CREDIT NOTE/DEBIT NOTE',0,1);
$pdf->Cell(90 ,5);
$pdf->Cell(55 ,5,'LANKA IOC PLC',0,1);
$pdf->Cell(70 ,5);
$pdf->Cell(55 ,5,'VAT REG NO:114314315-7000',0,1);
$pdf->Cell(159 ,5,' ',0,1);//end of line
$pdf->Cell(159 ,5,' ',0,1);//end of line
$pdf->Cell(159 ,5,' ',0,1);//end of line
$pdf->Cell(159 ,5,' ',0,1);//end of line
$pdf->Cell(159 ,5,' ',0,1);//end of line
$url = $_SERVER['REQUEST_URI'];
$valuearrayone=explode('=', $url);
$valuearrayone[0];
$userrealidall =$valuearrayone[1];
$valuearraytwo=explode('&', $userrealidall);
$userrealid = $valuearraytwo[0];
$invoiceid = $valuearraytwo[1];
$result = $wpdb->get_results ( "SELECT DISTINCT POST_DATE FROM wp_ioc_debit_note where PAYER = '$userrealid' AND INVOICE = '$invoiceid'" );
//if($result==
foreach ( $result as $print )
{
$pdf->Cell(150 ,5);
$pdf->Cell(55 ,5,'Document Date :',0,0);
$pdf->Cell(159 ,5,$print->POST_DATE,0,1);//end of line
}
$pdf->Cell(150 ,5);
$pdf->Cell(55 ,5,'Credit/Debit Note No :',0,0);
$pdf->Cell(159 ,5,$invoiceid,0,1);//end of line
$result = $wpdb->get_results ( "SELECT BILL_DOCNO FROM wp_ioc_debit_note where PAYER = '$userrealid' AND INVOICE = '$invoiceid'" );
//if($result==
foreach ( $result as $print )
{
$pdf->Cell(150 ,5);
$pdf->Cell(55 ,5,'Billing Doc No :',0,0);
$pdf->Cell(159 ,5,$print->BILL_DOCNO,0,1);//end of line
}
$result = $wpdb->get_results ( "SELECT DISTINCT INVOICE_REF FROM wp_ioc_debit_note where PAYER = '$userrealid' AND INVOICE = '$invoiceid'" );
//if($result==
foreach ( $result as $print )
{
$pdf->Cell(150 ,5);
$pdf->Cell(55 ,5,'Reference Invoice No :',0,0);
$pdf->Cell(159 ,5,$print->INVOICE_REF,0,1);//end of line
}
//make a dummy empty cell as a vertical spacer
$pdf->Cell(189 ,10,'',0,1);//end of line
global $wpdb;
//$last_link = $wpdb->get_var('SELECT display_name FROM wp_users where user_login = '.$userrealid);
$newest = $wpdb->get_row("SELECT display_name, ID FROM wp_users where user_login = '$userrealid'");
$lastarrowpublication = $newest->display_name;
$uid = $newest->ID;
$pdf->Cell(55 ,5,'Customer Name:',0,0);
//$pdf->Cell(85 ,5,$newest->display_name,0,1);
$pdf->Cell(159 ,5,$newest->display_name,0,1);//end of line
$pdf->Cell(55 ,5,'Customer Code:',0,0);
//$pdf->Cell(85 ,5,$newest->display_name,0,1);
$pdf->Cell(159 ,5,$userrealid,0,1);//end of line
//set font to arial, regular, 12pt
$pdf->SetFont('Arial','',12);
$url = $_SERVER['REQUEST_URI'];
$valuearrayone=explode('=', $url);
$valuearrayone[0];
$userrealid =$valuearrayone[1];
global $wpdb;
$newest = $wpdb->get_row("SELECT meta_value FROM wp_usermeta WHERE meta_key = 'Address' AND user_id = '$uid'");
$newest->meta_value;
$pdf->Cell(55 ,5,'Address:',0,0);
$pdf->Cell(159 ,5,$newest->meta_value,0,1);//end of line
global $wpdb;
$newest1 = $wpdb->get_row("SELECT meta_value FROM wp_usermeta WHERE meta_key = 'vat_number' AND user_id = '$uid'");
$newest1->meta_value;
$pdf->Cell(55 ,5,'VAT Reg No:',0,0);
$pdf->Cell(159 ,5,$newest1->meta_value,0,1);//end of line
$url = $_SERVER['REQUEST_URI'];
$valuearrayone=explode('=', $url);
$valuearrayone[0];
$userrealidall =$valuearrayone[1];
$valuearraytwo=explode('&', $userrealidall);
$userrealid = $valuearraytwo[0];
$invoiceid = $valuearraytwo[1];
//make a dummy empty cell as a vertical spacer
$pdf->Cell(189 ,10,'',0,1);//end of line
//invoice contents
$pdf->SetFont('Arial','B',10);
$pdf->SetFont('Arial','',8);
//Numbers are right-aligned so we give 'R' after new line parameter
$display_heading = array('MATERIAL'=>'MATERIAL', 'Description'=>'Description', 'DISC'=>'DISC', 'VAT'=>'VAT', 'TOTAL'=>'TOTAL');
$rows = $wpdb->get_results("SELECT MATERIAL, Description, DISC, VAT, TOTAL FROM wp_ioc_debit_note where PAYER = '$userrealid' AND INVOICE = '$invoiceid'");
//$header = $wpdb->get_results("SHOW columns FROM wp_invoice_details");
$header = array('MATERIAL', 'Description', 'DISC', 'VAT', 'TOTAL');
//mysqli_query($connString, "SHOW columns FROM employees");
foreach($header as $col)
{
if($col == 'Description')
{
$pdf->Cell(150,12,$col,1);
}
else if($col == 'Doc No')
{
$pdf->Cell(35,12,$col,1);
}
else if($col == 'Csh Rpt No')
{
$pdf->Cell(35,12,$col,1);
}
else
{
$pdf->Cell(25,12,$col,1);
}
}
foreach($rows as $row) {
$pdf->Ln();
foreach($row as $row=>$column)
if($row =='Description'){
$pdf->Cell(150,12,$column,1);
}
else if($row =='doccurr')
{
$pdf->Cell(35,12,$column,1);
}
else if($row =='invoice_no')
{
$pdf->Cell(35,12,$column,1);
}
else
{
$pdf->Cell(25,12,$column,1);
}
}
$pdf->Output();