Php 如何消除MySQL中重复的搜索结果?
我在使用PHP和SQL显示数据库中的文本时遇到一些问题。下面是一个类似于我的脚本Php 如何消除MySQL中重复的搜索结果?,php,mysql,sql,Php,Mysql,Sql,我在使用PHP和SQL显示数据库中的文本时遇到一些问题。下面是一个类似于我的脚本 $search_split = explode(" ", $search); //$search is what user entered foreach ($search_split as $searcharray) { $searched = mysqli_query($connect, "SELECT * FROM people WHERE `description` LIKE '%$searchar
$search_split = explode(" ", $search); //$search is what user entered
foreach ($search_split as $searcharray) {
$searched = mysqli_query($connect, "SELECT * FROM people WHERE `description` LIKE '%$searcharray%'");
while($info = mysqli_fetch_array($searched)) {
echo $info['description'];
}
}
例如,用户输入“他是男性”。我使用“explode”函数将这个词分为“He”、“is”和“male”三个部分。之后,我在数据库中搜索与这三个词相似的词。但是,如果一行包含所有这三个单词,它将显示该行三次。如何使其仅显示一次?首先将结果存储到一个数组中,然后显示它。请参阅下面的代码
$search_split = explode(" ", $search); //$search is what user entered
foreach ($search_split as $searcharray) {
$searched = mysqli_query($connect, "SELECT * FROM people WHERE `description` LIKE '%$searcharray%'");
while($info = mysqli_fetch_array($searched)) {
$results[$info['YOUR_PRIMARY_KEY']] = $info['description']; // this will over write your previous record
}
}
foreach($results as $result){
echo $result;
}
现在每个记录只显示一次。首先将结果存储到一个数组中,然后显示它。请参阅下面的代码
$search_split = explode(" ", $search); //$search is what user entered
foreach ($search_split as $searcharray) {
$searched = mysqli_query($connect, "SELECT * FROM people WHERE `description` LIKE '%$searcharray%'");
while($info = mysqli_fetch_array($searched)) {
$results[$info['YOUR_PRIMARY_KEY']] = $info['description']; // this will over write your previous record
}
}
foreach($results as $result){
echo $result;
}
现在每个记录只显示一次。您已将db查询放入foreach循环中,该循环循环3次(使用当前数据:he、is和male)。您要做的是将所有搜索变量放在一个查询中,例如:
$search_split = explode(" ", $search); //$search is what user entered
$querypart = "'%" . implode("%' AND '%", $search_split) . "%'"; // use OR or AND, to your liking
$searched = mysqli_query($connect, "SELECT * FROM people WHERE `description` LIKE " . $querypart);
while($info = mysqli_fetch_array($searched)) {
echo $info['description'];
}
这不会对查询输入进行任何转义/清理,请注意……您已将db查询放入foreach循环中,该循环循环3次(使用当前数据:he、is和male)。您要做的是将所有搜索变量放在一个查询中,例如:
$search_split = explode(" ", $search); //$search is what user entered
$querypart = "'%" . implode("%' AND '%", $search_split) . "%'"; // use OR or AND, to your liking
$searched = mysqli_query($connect, "SELECT * FROM people WHERE `description` LIKE " . $querypart);
while($info = mysqli_fetch_array($searched)) {
echo $info['description'];
}
这不会对查询输入进行任何转义/清理,请注意……您可以执行以下操作:
$search = 'test search me';
$search_split = array_map(function($piece) use ($mysqli_connection){
return "'%" . $mysqli_connection->real_escape_string($piece) . "%'";
}, explode(' ', $search)); //$search is what user entered
$search_split = implode(' OR `description` LIKE ', $search_split);
$sql = "SELECT * FROM people WHERE `description` LIKE $search_split";
echo $sql; // SELECT * FROM people WHERE `description` LIKE '%test%' OR `description` LIKE '%search%' OR `description` LIKE '%me%'
$searched = mysqli_query($connect, $sql);
你可以这样做:
$search = 'test search me';
$search_split = array_map(function($piece) use ($mysqli_connection){
return "'%" . $mysqli_connection->real_escape_string($piece) . "%'";
}, explode(' ', $search)); //$search is what user entered
$search_split = implode(' OR `description` LIKE ', $search_split);
$sql = "SELECT * FROM people WHERE `description` LIKE $search_split";
echo $sql; // SELECT * FROM people WHERE `description` LIKE '%test%' OR `description` LIKE '%search%' OR `description` LIKE '%me%'
$searched = mysqli_query($connect, $sql);
你能用吗
向表中添加全文索引
ALTER TABLE people ADD FULLTEXT(description);
然后您可以使用这样的查询
SELECT *
FROM people
WHERE
MATCH ( description )
AGAINST ('+He +is +male' IN BOOLEAN MODE)
你能用吗
向表中添加全文索引
ALTER TABLE people ADD FULLTEXT(description);
然后您可以使用这样的查询
SELECT *
FROM people
WHERE
MATCH ( description )
AGAINST ('+He +is +male' IN BOOLEAN MODE)
因此,最终结果包含独特的结果
for($i = 0; $i < count($finalres); $i++)
echo $finalres[$i];
for($i=0;$i
因此,最终结果包含独特的结果
for($i = 0; $i < count($finalres); $i++)
echo $finalres[$i];
for($i=0;$i
Ah,正如下面的评论员所说,您只需要运行一个查询。请尝试以的形式生成查询,其中x类似于“%word1%”或x类似于“%word2%”……
。问题出在代码中,而不是SQL语句中。将单个结果放入由说明
键入的字典中。重复的结果行只会覆盖以前的条目。最后,字典将只包含唯一的entriesAh,您只需要运行一个查询,正如下面的评论员所说。请尝试以的形式生成查询,其中x类似于“%word1%”或x类似于“%word2%”……
。问题出在代码中,而不是SQL语句中。将单个结果放入由说明
键入的字典中。重复的结果行只会覆盖以前的条目。最后,字典将只包含唯一的条目您仍然会得到重复的条目,因为来自不同查询的重复结果将出现在results
@PanagiotisKanavos No的不同条目中,每次重复的行都将被覆盖。这是一个非常简单的解决方案。哎呀,我没注意到你把数组用作字典。虽然全文搜索会更有效,但仍然会得到重复的结果,因为不同查询的重复结果将出现在results
@PanagiotisKanavos No的不同条目中,每次重复的行都会被覆盖。这是一个非常简单的解决方案。哎呀,我没注意到你把数组用作字典。这应该是可行的,,虽然全文搜索将更有效地解决问题,但允许SQLinjection@PanagiotisKanavos是的,我在发布好消息之前理解了重新循环insight@jacktheking我很高兴这对解决问题没有任何帮助,但允许使用SQLinjection@PanagiotisKanavos是的,我在发布好消息之前理解了重新循环insight@jacktheking 我很高兴这没问题