mysql_num_rows() 期望参数 1 是资源，布尔值在 [英] mysql_num_rows() expects parameter 1 to be resource, boolean given in

问题描述

我正在我的网站内建立一个搜索.我的数据库有问题.它给了我这个:

I'm building a search within my site. I have a problem with the DB. It's giving me this:

Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in C:\Program Files (x86)\EasyPHP-5.3.5.0\www\searchscript\search.php on line 86

我会向你展示代码部分，它给我这样的错误

I'll show you the code section where it gives me such error

line 82: $query = "SELECT * FROM dreams WHERE titolo,titch LIKE \"%$trimmed%\" ORDER BY id_dreams DESC "; 
line 85: $numresults=mysql_query($query);
line 86: $numrows=mysql_num_rows($numresults); //error

现在我试图看看查询背后的问题是什么，它告诉我:

Now I tried to see what is the problem behind the query and it's telling me this:

SELECT * FROM dreams WHERE titolo, titch LIKE "%tags%" ORDER BY id_dreams DESC 

您的 SQL 语法有错误；检查与您的 MySQL 服务器版本相对应的手册，以获取正确的语法，以使用接近 'titch LIKE "%tags%" 的语法.ORDER BY id_dreams DESC' 在第 1 行

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'titch LIKE "%tags%" ORDER BY id_dreams DESC' at line 1

这背后的代码是:

$query = "SELECT * FROM dreams WHERE titolo, titch LIKE \"%$trimmed%\" ORDER BY id_dreams DESC "; 
$result = mysql_query($query) or die($query."<br/><br/>".mysql_error());

推荐答案

mysql_query 正在返回一个布尔值，这意味着 sql 查询可能失败，并且您返回的是 false 而不是 mysql 资源.

The mysql_query is returning a boolean value meaning the sql query is probably failing and you're getting a false returned rather than a mysql resource.

您是否检查过您的查询?

Have you checked your query?

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