变量与REGEXP MYSQL询问

Question

嗨，我想下面的代码。

$domain = $_GET['url']; 
$sql = 'SELECT * FROM `domains` WHERE `domain` REGEXP CONVERT(_utf8 \'$url\' USING latin1) COLLATE latin1_swedish_ci'; 
$result = mysql_query($sql); 

while($row = mysql_fetch_array($result, MYSQL_NUM)) 
{ 
    echo "id :{$row[0]} <br>"; 

} 

将使用$ _GET获得来自用户的域，然后正则表达式从数据库.. 该查询不能正常工作，请告诉我正确的语法 我甚至尝试双引号\“$域” \

Answer 1

$sql = "SELECT * FROM `domains` WHERE `domain` REGEXP CONVERT(_utf8 '".$url."' USING latin1) COLLATE latin1_swedish_ci";