Question

我遇到问题mysql_select_db()函数未选择正确的数据库。我的代码如下：

    global $file_count;


    $conlivedata = mysql_pconnect("localhost","*****","*****");
        if (!$conlivedata) {
      echo "Failed to connect to MySQL: " . mysqli_connect_error();
    }
    $con = mysql_pconnect("***************","*****","*****");
    if (!$con) {
      echo "Failed to connect to MySQL: " . mysqli_connect_error();
    }
    mysql_select_db("csv_db", $con)or die("A MySQL error has occurred.Your Query: Error: (" . mysql_errno() . ") " . mysql_error());

    $result = mysql_query("SELECT * FROM `tbl_name` WHERE EmailAddr <> ' ' ORDER BY `EmailAddr`") or die("<br/>A MySQL Query error has occurred.Your Query: Error: (" . mysql_errno() . ") " . mysql_error());

    while($row = mysql_fetch_array($result))
    {
        echo $row['first_name'] . " " . $row['last_name'];
        $Email = $row['EmailAddr'];
        if ($Email != NULL ){
            mysql_select_db("foswood_db", $conlivedata) or die("<br/>A MySQL error has occurred Slecting Database.<br />Your Query: <br/> Error: (" . mysql_errno() . ") " . mysql_error());
            $liveresult = mysql_query("SELECT COUNT(*) FROM pledges WHERE EmailAddr = '$Email'") or die("<br/>A MySQL error has occurred.<br />Your Query: <br /> Error: (" . mysql_errno() . ") " . mysql_error());
            if(mysql_result($liveresult, 0) ) echo ': **Voted**';;
            mysql_select_db("csv_db", $con) or die("<br/>A MySQL error has occurred Slecting Database.<br />Your Query: <br /> Error: (" . mysql_errno() . ") " . mysql_error());
        }
        echo "<br />";
    }

    mysql_close($con);
    mysql_close($conlivedata);

我收到错误消息：

A MySQL error has occurred.
Your Query:
Error: (1146) Table 'csv_db.pledges' doesn't exist

有谁知道为什么请？

Answer 1

您应该指定用于查询的数据库。

$result = mysql_query("SELECT * FROM `tbl_name` WHERE EmailAddr <> ' ' ORDER BY `EmailAddr`", **$con**) ...

mysql_select_db（不选择数据库

1 个答案: