php - PHP SQL语法检查是否有匹配

Question

我正在尝试在 php 中查询 db 并获取是否存在匹配/成功，但它不会导致成功，尽管它应该如此，所以我认为存在语法错误？

这是代码：

if ($db_found) {
    $SQL = "SELECT * FROM wp_users where user_login='.$user.'";
    $result = mysql_query($SQL);

//Check if theres a match   
if $result > 0 {
        echo 'There was a match';
    }               

    ...
}

Answer 1

if (mysql_num_rows($result)) {
  echo 'match';
}

Answer 2

 if (mysql_num_rows($result)==1) {
   echo 'There was a match';
 }