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@@ -0,0 +1,52 @@
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+<?php
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+
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+namespace AntCMS;
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+
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+use AntCMS\AntCache;
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+
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+class AntKeywords
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+{
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+ public function generateKeywords($content = '', $count = 15)
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+ {
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+ $cache = new AntCache();
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+ $cacheKey = hash('sha3-512', $content);
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+
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+ if ($cache->isCached($cacheKey)) {
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+ $cachedKeywords = $cache->getCache($cacheKey);
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+
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+ if ($cachedKeywords !== false && !empty($cachedKeywords)) {
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+ return $cachedKeywords;
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+ }
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+ }
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+
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+ $stopWords = array('a', 'an', 'and', 'are', 'as', 'at', 'be', 'by', 'for', 'from', 'has', 'have', 'he', 'in', 'is', 'it', 'its', 'of', 'on', 'that', 'the', 'to', 'was', 'were', 'will', 'with');
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+ $symbols = array('$', '€', '£', '¥', 'CHF', '₹', '+', '-', '×', '÷', '=', '>', '<', '.', ',', ';', ':', '!', '?', '"', '\'', '(', ')', '[', ']', '{', '}', '©', '™', '°', '§', '¶', '•');
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+ $markdownSymbols = array('#', '##', '###', '####', '#####', '~~', '__', '**', '`', '``', '```', '*', '+', '>', '[', ']', '(', ')', '!', '&', '|');
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+
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+ $words = explode(' ', $content);
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+
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+ // Remove additional newlines and spaces
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+ $words = array_map(function ($key) {
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+ $key = preg_replace('~[\r\n]+~', '', $key);
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+ return trim(preg_replace('/\s\s+/', ' ', str_replace("\n", " ", $key)));
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+ }, $words);
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+
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+ $words = array_diff($words, $stopWords);
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+ $words = array_diff($words, $symbols);
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+ $words = array_diff($words, $markdownSymbols);
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+
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+ // Count the frequency of each word
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+ $word_counts = array_count_values($words);
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+
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+ // Sort the word counts in descending order
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+ arsort($word_counts);
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+
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+ // The most frequently occurring words are at the beginning of the array
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+ $count = (count($word_counts) < $count) ? count($word_counts) : $count;
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+ $keywords = array_slice(array_keys($word_counts), 0, $count);
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+ $keywords = implode(', ', $keywords);
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+
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+ $cache->setCache($cacheKey, $keywords);
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+ return $keywords;
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+ }
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+}
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Belle Aerni