使用fwrite保存.xls文件

Question

我必须创建一个脚本，该脚本需要一个mySQL表，并将其导出为.XLS格式，然后将该文件保存到Web主机上的指定文件夹中。

我懂了工作，但现在我似乎无法得到它的自动保存文件的位置，而不会提示用户。

它需要在指定时间运行的每一天，所以它可以保存前几天通向虚拟主机上的.xls文件。

下面是代码：

<?php 

// DB TABLE Exporter 
// 
// How to use: 
// 
// Place this file in a safe place, edit the info just below here 
// browse to the file, enjoy! 

// CHANGE THIS STUFF FOR WHAT YOU NEED TO DO 

    $dbhost = "-"; 
    $dbuser = "-"; 
    $dbpass = "-"; 
    $dbname = "-"; 
    $dbtable = "-"; 

// END CHANGING STUFF 

$cdate = date("Y-m-d"); // get current date 


// first thing that we are going to do is make some functions for writing out 
// and excel file. These functions do some hex writing and to be honest I got 
// them from some where else but hey it works so I am not going to question it 
// just reuse 


// This one makes the beginning of the xls file 
function xlsBOF() { 
    echo pack("ssssss", 0x809, 0x8, 0x0, 0x10, 0x0, 0x0); 
    return; 
} 

// This one makes the end of the xls file 
function xlsEOF() { 
    echo pack("ss", 0x0A, 0x00); 
    return; 
} 

// this will write text in the cell you specify 
function xlsWriteLabel($Row, $Col, $Value) { 
    $L = strlen($Value); 
    echo pack("ssssss", 0x204, 8 + $L, $Row, $Col, 0x0, $L); 
    echo $Value; 
    return; 
} 



// make the connection an DB query 
$dbc = mysql_connect($dbhost , $dbuser , $dbpass) or die(mysql_error()); 
mysql_select_db($dbname); 
$q = "SELECT * FROM ".$dbtable." WHERE date ='$cdate'"; 
$qr = mysql_query($q) or die(mysql_error()); 


// Ok now we are going to send some headers so that this 
// thing that we are going make comes out of browser 
// as an xls file. 
// 
header("Pragma: public"); 
header("Expires: 0"); 
header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); 
header("Content-Type: application/force-download"); 
header("Content-Type: application/octet-stream"); 
header("Content-Type: application/download"); 

//this line is important its makes the file name 
header("Content-Disposition: attachment;filename=export_".$dbtable.".xls "); 

header("Content-Transfer-Encoding: binary "); 

// start the file 
xlsBOF(); 

// these will be used for keeping things in order. 
$col = 0; 
$row = 0; 

// This tells us that we are on the first row 
$first = true; 

while($qrow = mysql_fetch_assoc($qr)) 
{ 
    // Ok we are on the first row 
    // lets make some headers of sorts 
    if($first) 
    { 
     foreach($qrow as $k => $v) 
     { 
      // take the key and make label 
      // make it uppper case and replace _ with ' ' 
      xlsWriteLabel($row, $col, strtoupper(ereg_replace("_" , " " , $k))); 
      $col++; 
     } 

     // prepare for the first real data row 
     $col = 0; 
     $row++; 
     $first = false; 
    } 

    // go through the data 
    foreach($qrow as $k => $v) 
    { 
     // write it out 
     xlsWriteLabel($row, $col, $v); 
     $col++; 
    } 
    // reset col and goto next row 
    $col = 0; 
    $row++; 
} 

xlsEOF(); 
exit(); 
?> 

我试着用，fwrite来做到这一点，但它似乎没有去很好，我删除了标头信息太多，但毫无效果。

这是原始代码，因为我发现它，任何帮助将不胜感激。 :-)

Thanx提前。 :-)

Answer 1

首先，由于您通过cron将其保存到磁盘，因此应该删除所有的头部（）调用。为了尽可能少地重写代码，我建议使用输出缓冲（http://www.php.net/manual/en/ref.outcontrol.php）。要做到这一点，将调用ob_start（）文件输出开始之前：

ob_start(); 
// start the file 
xlsBOF(); 

而且你的输出结束后，关闭输出缓冲器，捕捉它的内容，并将其写入文件：

xlsEOF(); 
// $filename should be set to some writeable location 
file_put_contents($filename, ob_get_clean()); 

Answer 2

它是xls还是xsl文件格式？ 让我困惑。

• 我想这是XLS：

第一：你需要设置字体样式，使用多个标签，使用公式？ 如果是这样，尝试去一个excel库，如phpwriteexcel。

否则，一个简单的CSV文件足够（逗号分隔值，从阵列创建很容易，使用Excel和其他电子表格软件完全读取）。

然后，在不提示的情况下自动保存：进行规划化任务/ cron任务，调用脚本。

Answer 3

这是最终的代码，它的作用就像一个魅力。

<?php 

    // DB TABLE Exporter 
    // 
    // How to use: 
    // 
    // Place this file in a safe place, edit the info just below here 
    // browse to the file, enjoy! 

    // CHANGE THIS STUFF FOR WHAT YOU NEED TO DO 
     $cdate = date("Y-m-d"); 
     $dbhost = "-"; 
     $dbuser = "-"; 
     $dbpass = "-"; 
     $dbname = "-"; 
     $dbtable = "-"; 
     $filename = "exported_on_$cdate.xls"; 

    // END CHANGING STUFF 


    // first thing that we are going to do is make some functions for writing out 
    // and excel file. These functions do some hex writing and to be honest I got 
    // them from some where else but hey it works so I am not going to question it 
    // just reuse 


    // This one makes the beginning of the xls file 
    function xlsBOF() { 
     echo pack("ssssss", 0x809, 0x8, 0x0, 0x10, 0x0, 0x0); 
     return; 
    } 

    // This one makes the end of the xls file 
    function xlsEOF() { 
     echo pack("ss", 0x0A, 0x00); 
     return; 
    } 

    // this will write text in the cell you specify 
    function xlsWriteLabel($Row, $Col, $Value) { 
     $L = strlen($Value); 
     echo pack("ssssss", 0x204, 8 + $L, $Row, $Col, 0x0, $L); 
     echo $Value; 
     return; 
    } 



    // make the connection an DB query 
    $dbc = mysql_connect($dbhost , $dbuser , $dbpass) or die(mysql_error()); 
    mysql_select_db($dbname); 
    $q = "SELECT * FROM ".$dbtable." WHERE date ='$cdate'"; 
    $qr = mysql_query($q) or die(mysql_error()); 

    //start the object 
    ob_start(); 

    // start the file 
    xlsBOF(); 

    // these will be used for keeping things in order. 
    $col = 0; 
    $row = 0; 

    // This tells us that we are on the first row 
    $first = true; 

    while($qrow = mysql_fetch_assoc($qr)) 
    { 
     // Ok we are on the first row 
     // lets make some headers of sorts 
     if($first) 
     { 
      foreach($qrow as $k => $v) 
      { 
       // take the key and make label 
       // make it uppper case and replace _ with ' ' 
       xlsWriteLabel($row, $col, strtoupper(ereg_replace("_" , " " , $k))); 
       $col++; 
      } 

      // prepare for the first real data row 
      $col = 0; 
      $row++; 
      $first = false; 
     } 

     // go through the data 
     foreach($qrow as $k => $v) 
     { 

      // write it out 
      xlsWriteLabel($row, $col, $v); 
      $col++; 
     } 

     // reset col and goto next row 
     $col = 0; 
     $row++; 

    } 

    xlsEOF(); 

    //write the contents of the object to a file 
    file_put_contents($filename, ob_get_clean()); 

    ?> 

Thanx for all the help guys !!!