即时尝试编码搜索引擎。
除此之外,如果我输入一个查询如西海岸,我也得到东海岸的结果。发生这种情况是因为东部和西部的关键字包含海岸作为单个词。PHP搜索引擎错误
但是我想用这行代码到单独的两个:
<?php
$k = $_GET['k'];
$terms = explode(" ", $k);
$query = "SELECT * FROM Search WHERE ";
foreach ($terms as $each){
$i++;
if($i == 1)
$query .= "keywords LIKE '%$each%' ";
else
$query .= "OR keywords LIKE '%$each%' ";
}
如果我回应了这一点用在搜索表单中的关键字都走散了,但进一步对他们不
如何我能解决这个问题吗?
<?php
$k = $_GET['k'];
$terms = explode(" ", $k);
$query = "SELECT * FROM Search WHERE ";
foreach ($terms as $each){
$i++;
if($i == 1)
$query .= "keywords LIKE '%$each%' ";
else
$query .= "OR keywords LIKE '%$each%' ";
}
if($k == "" || $k == " ")
{
echo "<p> Please enter a valid search term."; //If search is empty or contains only a space.
exit;
}
//connect to database
mysql_connect("LOCALHOST" ,"ROOT" ,"PASSWORD");
mysql_select_db("DATABASE");
$query = mysql_query($query);
$numrows = mysql_num_rows($query);
if($numrows > 0){
while($row = mysql_fetch_assoc($query))
{
$id = $row['id'];
$title = $row['title'];
$description = $row['description'];
$keywords = $row['keywords'];
$link = $row['link'];
echo "<h2><a href ='$link' class='searchcolor' color='#a8a8a8'> $title</a></h2>
$description<br />
This page contains information about \"<b>$query</b>\"<br /><hr>";
}
}
else
echo "No results for \"<b>$k</b>\"";
//disconnect
mysql_close();
?>
使用MATCH(),而不是像这样MATCH(“东海岸”),它返回一个加权的搜索结果,因此您可以按相关性排序,即:东海岸拥有高于相关性因此您可以确保东海岸出现在顶部和西岸,出现在第200页上。注意,这仅适用于全文索引和myiasm表格。你可以用innodb表来做,但你必须在代码中做而不是查询。 – Dave