php - how to get mysql id of number of effect row

Question

I perform the mysql query to check if any number of row effected on the user input data with the help of mysql_num_rows($query). Only one row will effect always as I made some rows are unique. If one row effect, I want to get the ID of that Row. I means the auto increment ID of the same row.

The same row contains many fields, its better if I come to know how to get the entry of other fields.

Thanks stack for your solutions.

Answer 1

你试过SELECT id FROM table WHERE value=condition吗？如果您查询，您将获得与您的条件匹配的行的 id。将 id 替换为标识符行，将 table 替换为您的表名，将 value 和 condition 替换为您的条件。

$query = "SELECT id FROM table WHERE value=condition";
$result = mysql_query($query);
if ($row = mysql_fetch_row($result)) {
  //$row contains valid information.
}

顺便说一句：不要再使用 mysql_*，它已被弃用，请查看 PDO 或 mysqli_*

Answer 2

$query = "SELECT mysql_id
          FROM table";
$stmt = $db->prepare($query);
$stmt->execute();
$id = $stmt->fetchColumn();

您可能必须在查询语句中添加“WHERE”子句，然后使用准备好的语句将值传递到数组中。

Answer 3

只需mysql_insert_id(); 在执行插入查询后使用此功能。

 $query = "INSERT INTO test (value) VALUES ('test')";
 mysql_query( $query );
 $lastInsertId=mysql_insert_id();
 echo $lastInsertId;