Question

当我拿结果时，在没有表信息的情况下，只存在表字段名称！另一个问题是，一列中的所有信息。这是我的代码：

 <?php 

if(isset($_POST['sub_csv'])){
    $conn=mysql_connect("localhost","root","");
    mysql_select_db("school",$conn);

   $filename='uploads/'.strtotime("now").'.csv';

    $fp=fopen($filename,"w");

    $sql=mysql_query("SELECT * FROM student");
    $num_rows=mysql_num_rows($sql);
    if($num_rows >=1)
    {
    $row=mysql_fetch_assoc($sql);

    $seperator="";
    $comma="";

    foreach($row as $name => $value)
    {
        $seperator .= $comma . '' .str_replace('','""',$name);
        $comma=",";
    }
    $seperator .="\n";
    fputs($fp,$seperator);
        fclose($fp);
    }

    else
    {
        echo 'No record in database';
    }
}
?>

结果： enter image description here

Answer 1

您可以使用直接fputcsv（）函数来创建csv文件。请参阅以下示例代码并更改您的PHP代码。你会得到预期的结果。

// output headers so that the file is downloaded rather than displayed
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=data.csv');

// create a file pointer connected to the output stream
$output = fopen('php://output', 'w');

// output the column headings
fputcsv($output, array('Column 1', 'Column 2', 'Column 3'));

// fetch the data
mysql_connect('localhost', 'username', 'password');
mysql_select_db('database');
$rows = mysql_query('SELECT field1,field2,field3 FROM table');

// loop over the rows, outputting them
while ($row = mysql_fetch_assoc($rows)) fputcsv($output, $row);

更多内容如下： 1. http://code.stephenmorley.org/php/creating-downloadable-csv-files/ 2. http://php.net/manual/en/function.fputcsv.php

Answer 2

现在你只获取第一行 $row=mysql_fetch_assoc($sql);

您需要使用类似while($row=mysql_fetch_assoc($sql)){..}

的while循环逐个获取所有行

根据您提供的代码：

<?php 

if(isset($_POST['sub_csv'])){
    $conn=mysql_connect("localhost","root","");
    mysql_select_db("school",$conn);

   $filename='uploads/'.strtotime("now").'.csv';

    $fp=fopen($filename,"w");

    $sql=mysql_query("SELECT * FROM student");
    $num_rows=mysql_num_rows($sql);
    if($num_rows >=1)
    {
    while($row=mysql_fetch_assoc($sql)){

    $seperator="";
    $comma="";

    foreach($row as $name => $value)
    {
        $seperator .= $comma . '' .str_replace('','""',$name);
        $comma=",";
    }
    $seperator .="\n";
    fputs($fp,$seperator);
    }
        fclose($fp);
    }

    else
    {
        echo 'No record in database';
    }
}
?>

在php中将mysql数据导出到csv，不要在csv文件中打印信息

2 个答案: