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我正在使用 PHP Mysql.i 提交表单并将数据提取到我的页面中的表格格式中。现在我希望用户可以从该表中下载 xls 文件,但我的问题是在我的数据库表中,id 中的值很少形成我如何在 xls 文件中检索它们,因为 xls 文件中的它显示 id,因为在数据库表中有 id。我不想提交值,因为名称 coz 名称可能不止一个。

这是我的下载 xls 链接代码:

<span style="float:right;"><a href="customer_xls.php" type="button" class="btn">Download XLS</a></span>

这是 customer_xls.php 文件:

<?php
     //EDIT YOUR MySQL Connection Info:
     $DB_Server = "localhost";        //your MySQL Server 
     $DB_Username = "root";                 //your MySQL User Name 
     $DB_Password = "";                //your MySQL Password 
     $DB_DBName = "xyz";                //your MySQL Database Name 
     $DB_TBLName = "customers";                //your MySQL Table Name 
    // $term = $_REQUEST['term'];

     //$DB_TBLName,  $DB_DBName, may also be commented out & passed to the browser
     //as parameters in a query string, so that this code may be easily reused for
     //any MySQL table or any MySQL database on your server
     //DEFINE SQL QUERY:
     //you can use just about ANY kind of select statement you want - 
     //edit this to suit your needs!
     $sql = "Select * from $DB_TBLName";
    //die();
     //Optional: print out title to top of Excel or Word file with Timestamp
     //for when file was generated:
     //set $Use_Titel = 1 to generate title, 0 not to use title
     $Use_Title = 1;
     //define date for title: EDIT this to create the time-format you need
     $now_date = date('m-d-Y H:i');
     //define title for .doc or .xls file: EDIT this if you want
     $title = "Dump For Table $DB_TBLName from Database $DB_DBName on $now_date";

     /*
     Leave the connection info below as it is:
     just edit the above.
     (Editing of code past this point recommended only for advanced users.)
     */
     //create MySQL connection
     $Connect = @mysql_connect($DB_Server, $DB_Username, $DB_Password)
         or die("Couldn't connect to MySQL:<br>" . mysql_error() . "<br>" . mysql_errno());
     //select database
     $Db = @mysql_select_db($DB_DBName, $Connect)
         or die("Couldn't select database:<br>" . mysql_error(). "<br>" . mysql_errno());
     //execute query
     $result = @mysql_query($sql,$Connect)
         or die("Couldn't execute query:<br>" . mysql_error(). "<br>" . mysql_errno());
     //if this parameter is included ($w=1), file returned will be in word format ('.doc')
     //if parameter is not included, file returned will be in excel format ('.xls')
     if (isset($w) && ($w==1))
     {
         $file_type = "msword";
         $file_ending = "doc";
     }else {
         $file_type = "vnd.ms-excel";
         $file_ending = "xls";
     }
     //header info for browser: determines file type ('.doc' or '.xls')
     header("Content-Type: application/$file_type");
     header("Content-Disposition: attachment; filename=$DB_TBLName.$file_ending");
     header("Pragma: no-cache");
     header("Expires: 0");
     /*    Start of Formatting for Word or Excel    */
     if (isset($w) && ($w==1)) //check for $w again
     {
         /*    FORMATTING FOR WORD DOCUMENTS ('.doc')   */
         //create title with timestamp:
         if ($Use_Title == 1)
         {
             echo("$titlenn");
         }
         //define separator (defines columns in excel & tabs in word)
         $sep = "\r"; //new line character
         while($row = mysql_fetch_row($result))
         {
             //set_time_limit(60); // HaRa
             $schema_insert = "";
             for($j=0; $j<mysql_num_fields($result);$j++)
             {
             //define field names
             $field_name = mysql_field_name($result,$j);
             //will show name of fields
             $schema_insert .= "$field_name:t";
                 if(!isset($row[$j])) {
                     $schema_insert .= "NULL".$sep;
                     }
                 elseif ($row[$j] != "") {
                     $schema_insert .= "$row[$j]".$sep;
                     }
                 else {
                     $schema_insert .= "".$sep;
                     }
             }
             $schema_insert = str_replace($sep."$", "", $schema_insert);
             $schema_insert .= "\t\n";
             print(trim($schema_insert));
             //end of each mysql row
             //creates line to separate data from each MySQL table row

             print "n----------------------------------------------------n";
         }
     }else{

         /*    FORMATTING FOR EXCEL DOCUMENTS ('.xls')   */
         //create title with timestamp:
         if ($Use_Title == 1)
         {
             echo("$titlen");
         }
         //define separator (defines columns in excel & tabs in word)
         $sep = "\t"; //tabbed character
         //start of printing column names as names of MySQL fields
         for ($i = 0; $i < mysql_num_fields($result); $i++)
         {
             echo mysql_field_name($result,$i) . "\t";
         }
         print("\n");
         //end of printing column names
         //start while loop to get data
         while($row = mysql_fetch_row($result))
         {
             //set_time_limit(60); // HaRa
             $schema_insert = "";
             for($j=0; $j<mysql_num_fields($result);$j++)
             {
                 if(!isset($row[$j]))
                     $schema_insert .= "NULL".$sep;
                 elseif ($row[$j] != "")
                     $schema_insert .= "$row[$j]".$sep;
                 else
                     $schema_insert .= "".$sep;
             }
             //$schema_insert = str_replace($sep."$", "", $schema_insert);
             //following fix suggested by Josue (thanks, Josue!)
             //this corrects output in excel when table fields contain n or r
             //these two characters are now replaced with a space
             //$schema_insert = preg_replace("/rn|nr|n|r/", " ", $schema_insert);
             $schema_insert .= "\n\t";
             print(trim($schema_insert));
             print "\n\r";


         }
     }
     ?>
4

1 回答 1

1

您必须将基本表与包含保存在第一个表中的 id 的单词表示的表连接起来。例子:

Table A:
id | id_user | id_city
1  | 10      | 5

Table B:
id | user_name
10 | Michael

Table C:
id | city_name
5  | New York

对于该表,您应该像这样构建查询:

SELECT a.id, b.user_name, c.city_name FROM table_a a 
JOIN table_b b ON a.id_user = b.id JOIN
JOIN table_c c ON a.id_city = c.id

该查询的结果应如下所示:

1 | Michael | New York  

获得相同结果的另一种方法是构建子查询(但这比 JOIN 方法更耗时)。例子:

SELECT id, (SELECT user_name FROM table_b WHERE id = a.id_user) name, 
(SELECT city_name FROM table_c WHERE id = a.id_city) city FROM table_a a
于 2013-08-01T12:47:27.480 回答