mysqli_num_fields的替代品不起作用

时间:2014-11-18 12:18:08

标签: mysqli

在我的代码中,我尝试了mysqli_fetch_field,mysqli_fetch_fields和mysqli_fetch_field_direct,但它们似乎都没有工作。这是我的代码:

// Fetch Record from Database

$output = "";
$table = "excel"; // Enter Your Table Name 
$sql = mysqli_query($connection, "select * from $table");
$columns_total = mysqli_num_fields($sql);

// Get The Field Name

for ($i = 0; $i < $columns_total; $i++) {
$heading = mysql_field_name($sql, $i);
$output .= '"'.$heading.'",';
}
$output .="\n";

运行此代码的错误是: mysql_field_name()期望参数1为资源

尝试mysqli_fetch_field_direct会出现此错误: 可捕获的致命错误:类stdClass的对象无法转换为

中的字符串

有什么想法吗?谢谢!

1 个答案:

答案 0 :(得分:0)

在代码中使用mysqli_fetch_field_direct代替mysql_field_name ...请参阅下面的示例

// Fetch Record from Database

$output = "";
$table = "excel"; // Enter Your Table Name 
$sql = mysqli_query($connection, "select * from $table");
$columns_total = mysqli_num_fields($sql);

// Get The Field Name

for ($i = 0; $i < $columns_total; $i++) {
 $heading = mysqli_fetch_field_direct($sql, $i);
 $output .= '"'.$heading.'",';
}
$output .="\n";