PHP-搜索字符串中的关键字并提高提取关键字的质量和准确性

我有一段PHP代码，如下所示：

$Keywords = array(
            ', JOE.' => '1',
            ', JOE' => '2',
            'JOE' => '3',
            'JOE.' => '4',
            '/JOE' => '5',
            '/JOE/' => '6',
            'JOE/.' => '7',
            ',JOE.' => '8'
    );
$Text = "JOE is JOE is JOE is JOE is JOE is JOE is JOE. Hello , JOE. Hey ,JOE. Come on , JOE. Dude,JOE/. Shut up ,JOE. What is the meaning of /JOE/? Of course, JOE";

extract_keyword ($Keywords, $Text);

function extract_keyword ($Keywords, $Text){
    mb_internal_encoding('UTF-8');

    uksort($Keywords, function ($a, $b) {
        $as = mb_strlen($a);
        $bs = mb_strlen($b);

        if ($as > $bs) {
            return -1;
        }
        else if ($bs > $as) {
            return 1;
        }
        return 0;

    });

    $Keywords_ci = array();

    foreach ($Keywords as $k => $v) {
        $Keywords_ci[$k] = $v;
    }

    $re = '/\b(?:' . join('|', array_map(function($keyword) {
        return preg_quote($keyword, '/');
    }, array_keys($Keywords))) . ')\b/i';

    $KeywordArrayKey = array();
    $KeywordArrayValue = array();
    $NewArray = array();
    preg_match_all($re, $Text, $matches);
    foreach ($matches[0] as $keyword) {
        $KeywordArrayKey[] = $keyword;
        $KeywordArrayValue[] = $Keywords_ci[$keyword];
        if(!empty($keyword) && !empty($Keywords_ci[$keyword])) {
        $NewArray[] = array($keyword => $Keywords_ci[$keyword]); 
        }
    } 
    print_r($NewArray) ."<br><br>";
}

正如您所看到的，问题在于代码不够精确，无法提取存在关键字的

$keywords

，例如

'，JOE'=>'1'或'JOE/'=>'7'

。事实上，我的目标是将

'/JOE'=>'5'

与

'/JOE/'=>'6'

或

'JOE'=>'4'

等完全分开。请看一下代码，让我知道如何提高提取关键字的质量/准确性？谢谢你的帮助。 注1：

print\r（$Keywords\u ci）

打印

数组（[，JOE.]=>1[JOE/]=>7[，JOE.]=>8[，JOE]=>2[JOE/]=>6[JOE.]=>4[JOE]=>5[JOE]=>3）

，但我要寻找的是在

$Text

中回显可用关键字的所有实例，例如

'/JOE/'=>6'

或

'，'=>8'

。 注2：以下是

打印（$NewArray）

的预期打印：

---

将关键字从最长到最短排序后，您知道将在该字符串的任何可能子集（/JOE/before/JOE）之前检查该字符串。因此，您可以使用

str_replace

删除实际匹配项，因此在搜索/JOE时不匹配/JOE/（假设您以前搜索过/JOE/）。使用的

count

参数获取匹配项目的计数

<?php
$Keywords = array(
            ', JOE.' => '1',
            ', JOE' => '2',
            'JOE' => '3',
            'JOE.' => '4',
            '/JOE' => '5',
            '/JOE/' => '6',
            'JOE/.' => '7',
            ',JOE.' => '8'
    );
$Text = "JOE is JOE. Hello , JOE. Hey ,JOE. Come on , JOE. Dude,JOE/. Shut up ,JOE. What is the meaning of /JOE/? Of course, JOE";

uksort($Keywords, function ($a, $b) {
        $as = mb_strlen($a);
        $bs = mb_strlen($b);

        if ($as > $bs) {
            return -1;
        }
        else if ($bs > $as) {
            return 1;
        }
        return 0;

    });

$copy = $Text;
foreach ($Keywords as $keyword => $value) {
   $copy = str_replace($keyword, '', $copy, $count);
   if ($count > 0) {
       $result[$keyword] = $value;
   }
}

print_r($result);

---

谢谢你的回答。当我回显
打印时（$Keywords\u ci）
在当前代码中，我得到的结果与您的
print\r（$result）相同。然而，我要关注的是，为了根据可用关键字的数量提高匹配的质量，@Apiah您可以添加预期的输出吗？不要重新发明轮子。看看Elasticsearch和Solr。它们都是从Lucene派生出来的，但从PHP使用起来要容易得多。@LaurynasTretjakovas，谢谢你的评论，不幸的是，我不是一名专业程序员，你能给我一个如何在我的问题中使用Elasticsearch或Solr的例子吗？
Array ( 
[0] => Array ( [JOE] => 3 ) 
[1] => Array ( [JOE] => 3 ) 
[2] => Array ( [JOE] => 3 ) 
[3] => Array ( [JOE] => 3 ) 
[4] => Array ( [JOE] => 3 ) 
[5] => Array ( [JOE] => 3 ) 
[6] => Array ( [JOE.] => 4 ) 
[7] => Array ( [, JOE.] => 1 ) 
[8] => Array ( [,JOE.] => 8 ) 
[9] => Array ( [, JOE.] => 1 ) 
[10] => Array ( [JOE/.] => 7 ) 
[11] => Array ( [,JOE.] => 8 ) 
[12] => Array ( [/JOE/] => 6 ) 
[13] => Array ( [, JOE] => 2 ) )

<?php
$Keywords = array(
            ', JOE.' => '1',
            ', JOE' => '2',
            'JOE' => '3',
            'JOE.' => '4',
            '/JOE' => '5',
            '/JOE/' => '6',
            'JOE/.' => '7',
            ',JOE.' => '8'
    );
$Text = "JOE is JOE. Hello , JOE. Hey ,JOE. Come on , JOE. Dude,JOE/. Shut up ,JOE. What is the meaning of /JOE/? Of course, JOE";

uksort($Keywords, function ($a, $b) {
        $as = mb_strlen($a);
        $bs = mb_strlen($b);

        if ($as > $bs) {
            return -1;
        }
        else if ($bs > $as) {
            return 1;
        }
        return 0;

    });

$copy = $Text;
foreach ($Keywords as $keyword => $value) {
   $copy = str_replace($keyword, '', $copy, $count);
   if ($count > 0) {
       $result[$keyword] = $value;
   }
}

print_r($result);