Question

我正在尝试将一些数据从mysql表导出到文本文件中。

但是，我只在文本文件中写了一些,而没有members表格中的实际数据！

我正在使用下面的代码：

<?php
    $fh = fopen('email-data.txt', 'w');
    include "../config/connect.php";

    /* insert field values into data.txt */

    $sql = "SELECT * FROM members";
    $query = mysqli_query($db_conx, $sql);   
    while($row = mysqli_fetch_array($query, MYSQLI_ASSOC)){           
        $num = mysqli_num_fields($query) ;    
        $last = $num - 1;
        for($i = 0; $i < $num; $i++) {            
            fwrite($fh, $row[$i]);                       
            if ($i != $last) {
                fwrite($fh, ",");
            }
        }                                                                 
        fwrite($fh, "\n");
    }
    fclose($fh);
?>

有人可以帮我解决这个问题吗？

Answer 1

这样的事情？你收到一个没有数字索引的关联数组

<?php
$fh = fopen('email-data.txt', 'w');
include "../config/connect.php";

/* insert field values into data.txt */

$sql = "SELECT * FROM members";
$query = mysqli_query($db_conx, $sql);   
while($row = mysqli_fetch_array($query, MYSQLI_ASSOC)){           
    //$num = mysqli_num_fields($query) ;    
    //$last = $num - 1;
    //for($i = 0; $i < $num; $i++) {            
    $last = sizeof($row)-1;
    $i = 0;
    foreach($row as $field) {
        fwrite($fh, $field);                       
        if ($i != $last) {
            fwrite($fh, ",");
        }
        $i++;
    }                                                                 
    fwrite($fh, "\n");
}
fclose($fh);
?>

Answer 2

更改mysqli_fetch_array()函数的第二个参数。

while循环应该看起来像while($row = mysqli_fetch_array($query, MYSQLI_NUM)){...}

Answer 3

将MYSQLI_ASSOC更改为MYSQLI_NUM

您正在使用Numbers获取行但使用Assiciative数组

将数据从mysql导出到文本文件中？

3 个答案: