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我在下面的脚本中不断收到此错误，并且不确定如何解决此问题。我已经搜索并阅读了大量文章，但没有得到它。我错过了什么？真诚感谢任何帮助！

“警告：mysql_num_rows()：提供的参数不是第 42 行 /home/content/37/8642937/html/settingupsearch.php 中的有效 MySQL 结果资源”

<?php

$var = @$_GET['q'] ; // get the query for the search engine (if applicable)
$trimmed = trim($var); //trim whitespace from the stored variable

{
        $con = mysql_connect("***","***","***");
        if (!$con)
          {
          die('Could not connect: ' . mysql_error());
          }
}

$field = "title";
$query = mysql_query("SELECT * FROM Listings WHERE ($field) LIKE'%$trimmed%' ORDER BY id"); 

$result = mysql_query($query); 

?>

<form name="search" method="GET" action="<?=$PHP_SELF?>">
Search the database for: <input type="text" name="q" />
<input type="submit" name="search" value="Search" />
</form>

<?
if ($trimmed == "")
{
echo "<p>Please enter a search...</p>";
exit;
}

// check for a search parameter
if (!isset($var))
{
echo "<p>We dont seem to have a search parameter!</p>";
exit;
}

$numresults=mysql_query($query);
$numrows=mysql_num_rows($numresults);

if ($numrows == 0)
{
echo "<h4>Results</h4>";
echo "<p>Sorry, your search: &quot" . $trimmed . "&quot returned zero results</p>";
}

// next determine if s has been passed to script, if not use 0
if (empty($s))
{
$s=0;
}

// get results
$result = mysql_query($query) or die("Couldn't execute query");

if($numrows > 1){ $return = "results";}
else{ $return = "result"; }

// display what the person searched for
echo "<p>Your search for &quot" . $var . "&quot returned $numrows $return.</p>";

// begin to show results set
$count = 1 + $s ;

while ($r= mysql_fetch_array($result))
{
$id = $r["ID"];
$title = $r["title"];
$date = $r["price"];
$city = $r["city"];

$count++ ;

?>

<a href="http://www.***.com/archive/<? echo $title ?>/<? echo $id ?>.html"><? echo $price ?></a>

<? echo $city ?>


<? } ?>
4

1 回答 1

2

在查看您的代码时，您似乎有一个错误：

$query = mysql_query("SELECT * FROM Listings WHERE ($field) LIKE'%$trimmed%' ORDER BY id");

这包含在 mysql_query 中，然后您使用 mysql_query 再次调用它。

于 2012-09-15T05:01:22.490 回答