MySQL和PHP行数组

好吧所以我对MySQL的一切都有天生的恐惧

这是我的表：

+----+-----------------+------+
| id | name            | age  |
+----+-----------------+------+
|  1 | Timmy Mellowman |   23 |
|  2 | Jeff Johnson    |   18 |
+----+-----------------+------+

这是我的PHP代码(连接到数据库之外)

$raw = MysqL_query("SELECT * FROM example") or die(MysqL_error()); 
$row = MysqL_fetch_array($raw);
echo "\n\n";
print_r($row);

所以这是我的输出：

Array
(
    [0] => 1
    [id] => 1
    [1] => Timmy Mellowman
    [name] => Timmy Mellowman
    [2] => 23
    [age] => 23
)

为什么这是输出？这个名字加倍？为什么为[1]和[name]设置名称？

另一方面,他们是将PHP与MysqL结合使用的更好方法

解决方法:

每个PHP docs for MysqL_fetch_array：

Returns an array of strings that corresponds to the fetched row, or
FALSE if there are no more rows. The type of returned array depends on
how result_type is defined. By using MysqL_BOTH (default), you’ll get
an array with both associative and number indices. Using MysqL_ASSOC,
you only get associative indices (as MysqL_fetch_assoc() works), using
MysqL_NUM, you only get number indices (as MysqL_fetch_row() works).

所以在你的行$row = MysqL_fetch_array($raw); $row接收一个具有关联和数字索引的数组,因为这是默认值.如果只想要关联索引,请使用$row = MysqL_fetch_array($raw,MysqL_ASSOC); (或者MysqL_fetch_assoc())或者你只想要数字索引,使用$row = MysqL_fetch_array($raw,MysqL_NUM); (或MysqL_fetch_row()).

要检索所有行,请使用以下内容：

while ($row = MysqL_fetch_array($raw)) {
    echo "<p>" . $row['id'] . " - " . $row['name'] . " - " . $row['age'] . "</p>\n";  
}