FPDF，从 mysql 表中为选定值生成 pdf

Question

你好朋友下面是我的 php 代码，它从 MYSQL 表（所有行）生成 PDF 并且像任何东西一样工作，我需要为选定的行生成报告，只说例如存储在的第 1 行和第 3 行一个数组（$sel），我不知道如何使用 for、foreach 和 while 循环来实现这一点......任何帮助将不胜感激。

这是我的数据库表

 ----------------------------------
| id | company            | total  |
 ----------------------------------
| 1  | ABC                | 1000   |
| 2  | XYZ                |  500   |
| 3  | PZX                |  100   |
 ----------------------------------

这是我的 php 页面，它在加载时生成 pdf 并提供该文件的下载链接

<?php

require('u/fpdf.php');//fpdf path
include_once('db_connect.php');// my db connection

$sel = array (1,3);

$result=mysql_query("select * from `receipt`  ");

//Initialize the 3 columns and the total
$c_code = "";
$c_name = "";
$c_price = "";
$total = 0;

//For each row, add the field to the corresponding column
while($row = mysql_fetch_array($result))
{ 
   $code =$row['id'];
   $name = substr($row['company'],0,20);
   $real_price = $row['total'];
   $show =$row['total'];

 $c_code = $c_code.$code."\n";
 $c_name = $c_name.$name."\n";
 $c_price = $c_price.$show."\n";

//Sum all the Prices (TOTAL)
    $total = $total+$real_price;
}
mysql_close();

$total = $total;

//Create a new PDF file
$pdf=new FPDF();
$pdf->AddPage();

//Now show the 3 columns
$pdf->SetFont('Arial','',12);
$pdf->SetY(26);
$pdf->SetX(45);
$pdf->MultiCell(20,6,$c_code,1);
$pdf->SetY(26);
$pdf->SetX(65);
$pdf->MultiCell(100,6,$c_name,1);
$pdf->SetY(26);
$pdf->SetX(135);
$pdf->MultiCell(30,6,$c_price,1,'R');
$pdf->SetX(135);
$pdf->MultiCell(30,6,'$ '.$total,1,'R');

$filename="invoice.pdf";
$pdf->Output($filename,'F');

echo'<a href="invoice.pdf">Download your Invoice</a>';

?>

上面的代码给了我这样的结果-

 ----------------------------------
| 1  | ABC                | 1000   |
| 2  | XYZ                |  500   |
| 3  | PZX                |  100   |
 ----------------------------------
                          | 1600   |
                           --------

我希望我的结果像这样显示

 ----------------------------------
| 1  | ABC                | 1000   |
| 3  | PZX                |  100   |
 ----------------------------------
                          | 1100   |
                           --------

再次提前感谢..

Answer 1

以下代码在对上述代码进行少量修改后运行良好（使用 where 子句）

$result=mysql_query("select * from `receipt` where id IN(1,3) "); 

一个变量可以通过使用 implode 分隔来使用尽可能多的变量，例如从上一页选择的复选框数组值

<?php

require('u/fpdf.php');//fpdf path
include_once('db_connect.php');// my db connection

$sel =array (1,3);// can use $sel =$_GET['sel']; where $_GET['sel'], sel is a checkbox array value received from prev page..

$id=implode(",",$sel);//seperating ',' from array

$result=mysql_query("select * from `receipt` where id IN($id) ");
//Initialize the 3 columns and the total
$c_code = "";
$c_name = "";
$c_price = "";
$total = 0;

//For each row, add the field to the corresponding column
while($row = mysql_fetch_array($result))
{ 
   $code =$row['id'];
   $name = substr($row['company'],0,20);
   $real_price = $row['total'];
   $show =$row['total'];

 $c_code = $c_code.$code."\n";
 $c_name = $c_name.$name."\n";
 $c_price = $c_price.$show."\n";

//Sum all the Prices (TOTAL)
    $total = $total+$real_price;
}
mysql_close();

$total = $total;

//Create a new PDF file
$pdf=new FPDF();
$pdf->AddPage();

//Now show the 3 columns
$pdf->SetFont('Arial','',12);
$pdf->SetY(26);
$pdf->SetX(45);
$pdf->MultiCell(20,6,$c_code,1);
$pdf->SetY(26);
$pdf->SetX(65);
$pdf->MultiCell(100,6,$c_name,1);
$pdf->SetY(26);
$pdf->SetX(135);
$pdf->MultiCell(30,6,$c_price,1,'R');
$pdf->SetX(135);
$pdf->MultiCell(30,6,'$ '.$total,1,'R');

$filename="invoice.pdf";
$pdf->Output($filename,'F');

echo'<a href="invoice.pdf">Download your Invoice</a>';

?>

Answer 2

$result=mysql_query("select * from `receipt` where id IN(1,3) ");