PHP(MySQL)错误:“警告:mysql_num_rows()期望参数1为资源"； [英] PHP (MySQL) error : "Warning: mysql_num_rows() expects parameter 1 to be resource"

问题描述

可能重复:
mysql_fetch_array()期望参数1成为资源，在select中给出布尔值

Possible Duplicate:
mysql_fetch_array() expects parameter 1 to be resource, boolean given in select

if (!empty($_POST)){

    $email_to=$_POST['email_to'];
    $email_to=mysql_real_escape_string($_POST['email_to']);

    $sql = "UPDATE `cosmos`.`members` SET `conf` = '2' WHERE `members`.`email` = '$email_to';";
    $result=mysql_query($sql) or trigger_error(mysql_error().$sql);

    $count=mysql_affected_rows($result);                  // line 20
    if($count==1){

    $rows=mysql_fetch_array($result);
    $unique=$rows['u_code'];
    $name=$rows['username'];
    // ---------------- SEND MAIL FORM ---------------- 
    $to=$email_to; 
    $subject="Your Account Password Request! - Cosmos"; 
    $header="from: Tayal's/Cosmos <[e-mail]>"; 
    $messages= "Hey $name ,\r\n";
    $messages.="You recently requested a new password";
    $messages.="<br /><a href='confirm.php?uid" . $unique . "'>Confirmation Link</a> \r\n";
    $sentmail = mail($to,$subject,$messages,$header); 
    echo $messages; 
    }   else {
    echo "Not found your email in our database";
    }


}

警告:mysql_affected_rows()期望参数1为资源，在第20行的C:\ wamp \ www \ a \ l \ forget.php中给出布尔值

Warning: mysql_affected_rows() expects parameter 1 to be resource, boolean given in C:\wamp\www\a\l\forget.php on line 20

推荐答案

$result=mysql_query($sql);

到

$result=mysql_query($sql) or trigger_error(mysql_error().$sql);

然后再次运行

然后

$email_to=$_POST['email_to'];

到

$email_to=mysql_real_escape_string($_POST['email_to']);

哦，是的，还有引号

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