How can filtering out irrelevant words from an article before scanning improve keyword search functionality in PHP?

Filtering out irrelevant words from an article before scanning can improve keyword search functionality in PHP by reducing the number of unnecessary words that are indexed and searched for. This can help to improve the accuracy and relevancy of search results, as the search algorithm will focus on more meaningful keywords. 

// Sample code to filter out irrelevant words from an article before scanning
$article = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.";

// List of irrelevant words to filter out
$irrelevant_words = array("Lorem", "ipsum", "dolor", "sit", "amet", "consectetur", "adipiscing", "elit", "Sed", "do", "eiusmod", "tempor", "incididunt", "ut", "labore", "et", "dolore", "magna", "aliqua");

// Filter out irrelevant words
$filtered_article = preg_replace('/\b(' . implode('|', $irrelevant_words) . ')\b/i', '', $article);

// Output filtered article
echo $filtered_article;

Keywords

filtering irrelevant words article keyword search PHP

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