php - mysql中打印表后导出为csv

Question

花了很多时间试图解决这个问题，但没有结果。用户可以在表单中选择一些过滤器，从而生成一个唯一的表格，并打印到屏幕上。

然后我想要一个按钮来将此特定表导出到 csv 文件，存储在用户计算机上。

if(isset($_POST["askReport"])){ 
//all the variables
//...
$myQuery = ""SELECT *, TIME_TO_SEC(stopwerkdagU) - TIME_TO_SEC(startwerkdagU) - pauzetijdU AS totaalurenU, TIME_TO_SEC(stopwerkdagU) - TIME_TO_SEC(startwerkdag) - pauzetijd AS totaaluren FROM `newRegister` $u $aP $pD $uF $sD"";

$result = $mysqli->query($myQuery);
  if($result->num_rows >0){
    print '<table><tr><th>.....'; //and all the headers
    print '<td>'.$row["user"].'</td>';
    ..... //and all the other columns and end of row
  }

到目前为止，一切顺利，我得到了一个很好的表格，其中包含我想要的结果。但棘手的部分来了 - 如何获得下载该表的按钮？这是我尝试过的:(此代码仍然在 isset($_POST["askReport"]) if 语句中)

// DOWNLOAD TABEL
    print '<form method="POST"><button name=download>download</button></form>';

    if(isset($_POST["download"])){
        $select = "SELECT *, TIME_TO_SEC(stopwerkdagU) - TIME_TO_SEC(startwerkdagU) - pauzetijdU AS totaalurenU, TIME_TO_SEC(stopwerkdagU) - TIME_TO_SEC(startwerkdag) - pauzetijd AS totaaluren FROM `newRegister` $u $aP $pD $uF $sD";

        $export = mysql_query ( $select ) or die ( "Sql error : " . mysql_error( ) );

        $fields = mysql_num_fields ( $export );

        for ( $i = 0; $i < $fields; $i++ )
        {
            $header .= mysql_field_name( $export , $i ) . "\t";
        }

        while( $row = mysql_fetch_row( $export ) )
        {
            $line = '';
            foreach( $row as $value )
            {                                            
                if ( ( !isset( $value ) ) || ( $value == "" ) )
                {
                    $value = "\t";
                }
                else
                {
                    $value = str_replace( '"' , '""' , $value );
                    $value = '"' . $value . '"' . "\t";
                }
                $line .= $value;
            }
            $data .= trim( $line ) . "\n";
        }
        $data = str_replace( "\r" , "" , $data );

        if ( $data == "" )
        {
            $data = "\n(0) Records Found!\n";                        
        }

        header("Content-type: application/octet-stream");
        header("Content-Disposition: attachment; filename=download  .xls");
        header("Pragma: no-cache");
        header("Expires: 0");
        print "$header\n$data";         
    };

}   

这不会给出任何错误。它只是重新加载页面。所以我不明白为什么它不起作用。我感谢您的帮助。

Answer 1

部分解决方案

以下代码(您的代码，只是为了测试目的而注释掉了 MySQL)工作正常。我正在运行 Apache/2.4.9 (Unix) PHP/5.5.14

当我输入 <?php 时，下载工作就完成了。和?>标记。尝试此代码并让我知道它是否有效。

<?php
// DOWNLOAD TABEL
    print '<form method="POST"><button name=download>download</button></form>';

    if(isset($_POST["download"])){
        $select = "SELECT *, TIME_TO_SEC(stopwerkdagU) - TIME_TO_SEC(startwerkdagU) - pauzetijdU AS totaalurenU, TIME_TO_SEC(stopwerkdagU) - TIME_TO_SEC(startwerkdag) - pauzetijd AS totaaluren FROM `newRegister` $u $aP $pD $uF $sD";

/*        $export = mysql_query ( $select ) or die ( "Sql error : " . mysql_error( ) );

        $fields = mysql_num_fields ( $export );

        for ( $i = 0; $i < $fields; $i++ )
        {
            $header .= mysql_field_name( $export , $i ) . "\t";
        }

        while( $row = mysql_fetch_row( $export ) )
        {
            $line = '';
            foreach( $row as $value )
            {   
                if ( ( !isset( $value ) ) || ( $value == "" ) )
                {
                    $value = "\t";
                }
                else
                {
                    $value = str_replace( '"' , '""' , $value );
                    $value = '"' . $value . '"' . "\t";
                }
                $line .= $value;
            }
            $data .= trim( $line ) . "\n";
        }
        $data = str_replace( "\r" , "" , $data );
*/

        if ( $data == "" )
        {
            $data = "\n(0) Records Found!\n";
        }

$header="abc,123";

        header("Content-type: application/octet-stream");
        header("Content-Disposition: attachment; filename=download  .xls");
        header("Pragma: no-cache");
        header("Expires: 0");
        echo "$header\n$data";
    };

?>