使用mysql_query（）获取位字段

Question

Here's my code:

$query = "SELECT Username, EmailVerified, Blocked FROM user";
$result = mysql_query($query, $link);
$row = mysql_fetch_assoc($result);
print_r($row);

Field Username is string and EmailVerified and Blocked are of type bit . The line print_r($row) displays the value of Username field but not the other two. I tried mysql_fetch_object(), mysql_fetch_row(), mysql_fetch_array() also, but same result.

Can't we fetch bit fields with mysql_query()?

Answer 1

我认为你需要将BIT字段转换为整数 - >

SELECT Username, CAST(EmailVerified AS unsigned integer) AS EmailV, CAST(Blocked AS unsigned integer) AS Block FROM User

Answer 2

Yes you can but they are retrieved as strings, and most likely end up being unprintable characters. You can get the values as numbers like so:

$query = "SELECT Username, EmailVerified, Blocked FROM user";
$result = mysql_query($query, $link);
$row = mysql_fetch_assoc($result);

$row['EmailVerified'] = ord( $row['EmailVerified'] );
$row['Blocked'] = ord( $row['Blocked'] );
print_r($row);

Answer 3

您可以使用BOOL （已经是TINYINT ）并存储TRUE（1）或FALSE（0）值，而不是每次需要使用时都使用BIT并进行转换。