Php 从搜索的字符串中删除常用词

好的，我有一个由空格分隔的字符串，即

$commonwords='a，an，and，I，it，is，do，do，for，from，go，how，the等'

$commonwords = 'a,an,and,I,it,is,do,does,for,from,go,how,the,etc';

$commonwords = explode(",", $commonwords);


$search = "How do I search for files";

$search = explode(" ", $search);

foreach($search as $value){
    if(!in_array($value, $commonwords)){
        echo "$value<br/>";
        $query[] = $value;
    }
}   


    $query = implode(" ", $query);

    echo $query;
?>

我收到一个来自$_POST['searchquery']的搜索查询

我想从搜索字符串中删除任何常用词，我要寻找的最终结果将是更简洁的关键字，然后我可以使用这些关键字查询数据库

因此，如果用户搜索“如何搜索文件”

---

删除所有常用词后，字符串将变为“搜索文件”。

这将起作用，但您必须在$commonwords中添加大写的“how”

$commonwords = 'a,an,and,I,it,is,do,does,for,from,go,how,the,etc';

$commonwords = explode(",", $commonwords);


$search = "How do I search for files";

$search = explode(" ", $search);

foreach($search as $value){
    if(!in_array($value, $commonwords)){
        echo "$value<br/>";
        $query[] = $value;
    }
}   


    $query = implode(" ", $query);

    echo $query;
?>

$commonwords='a，an，and，I，it，is，do，do，for，from，go，how，the，etc'；
$commonwords = 'a,an,and,I,it,is,do,does,for,from,go,how,the,etc';

$commonwords = explode(",", $commonwords);


$search = "How do I search for files";

$search = explode(" ", $search);

foreach($search as $value){
    if(!in_array($value, $commonwords)){
        echo "$value<br/>";
        $query[] = $value;
    }
}   


    $query = implode(" ", $query);

    echo $query;
?>

$commonwords=爆炸（“，”，$commonwords）；
$commonwords = 'a,an,and,I,it,is,do,does,for,from,go,how,the,etc';

$commonwords = explode(",", $commonwords);


$search = "How do I search for files";

$search = explode(" ", $search);

foreach($search as $value){
    if(!in_array($value, $commonwords)){
        echo "$value<br/>";
        $query[] = $value;
    }
}   


    $query = implode(" ", $query);

    echo $query;
?>

$search=“如何搜索文件”；
$search=explode（“，$search”）；
foreach（$value搜索）{
if（！in_数组（$value，$commonwords））{
$commonwords = 'a,an,and,I,it,is,do,does,for,from,go,how,the,etc';

$commonwords = explode(",", $commonwords);


$search = "How do I search for files";

$search = explode(" ", $search);

foreach($search as $value){
    if(!in_array($value, $commonwords)){
        echo "$value<br/>";
        $query[] = $value;
    }
}   


    $query = implode(" ", $query);

    echo $query;
?>

回显“$value
”；
$query[]=$value；
}
}   
$query=内爆（“，$query”）；
echo$query；
?>

试试这个（）：

---

为了获得更好的结果，将常用词和搜索词转换为小写或大写，这里我使用小写

<?php
$commonwords = 'a,an,and,i,it,is,do,does,for,from,go,how,the,etc';

$commonwords = explode(",", $commonwords);


$search = strtolower("How do I search for files");

$search = explode(" ", $search);

foreach($search as $value){
    if(!in_array($value, $commonwords)){
       $query[] = $value;
    }
} 

    $query = implode(" ", $query);

    echo $query; // this is output
?>

---

这里有一个用于删除停止字的库：。您可以这样使用它：

echo remove_stop_words('The quick brown fox jumps over the lazy dog');
// quick brown fox jumps   lazy dog

---

顺便说一句，你要找的术语是“停止词”。不，我不知道为什么叫停止词。是的，我在考虑大小写匹配，可能只会在$commonwords和$searchquery上使用strtoupper。回答得很好，速度也很快。今天不能胡思乱想-我想我仍然在忍受新年宿醉，无论如何我感谢你的帮助@凯，不客气。如果您最喜欢，请选择我的答案作为正式解决方案。array_diff（）会保存您的time@Letmesee酷。我不知道这个函数。我个人会在foreach中降低大小写，这样可以在case中搜索某些内容，但仍然可以删除列表中未加大小写的单词。

$commonwords = 'a,an,and,I,it,is,do,does,for,from,go,how,the,etc';

$commonwords = explode(",", $commonwords);


$search = "How do I search for files";

$search = explode(" ", $search);

foreach($search as $value){
    if(!in_array($value, $commonwords)){
        echo "$value<br/>";
        $query[] = $value;
    }
}   


    $query = implode(" ", $query);

    echo $query;
?>