How to calculate the similarity of two articles using PHP?
similar_text()
function: This is a built-in function in PHP that calculates the similarity of two strings. It returns the number of matching characters in the two strings, or the similarity in percent if the third parameter is passed.PHP
$similarity = similar_text($article1, $article2);
if ($similarity > 0.75) {
echo "The two articles are very similar.";
} else {
echo "The two articles are not very similar.";
}
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levenshtein()
function: This is another built-in function in PHP that calculates the Levenshtein distance between two strings. The Levenshtein distance is a measure of how similar two strings are, and it is calculated by counting the number of edits (insertions, deletions, or substitutions) required to transform one string into the other.PHP
$levenshtein_distance = levenshtein($article1, $article2);
if ($levenshtein_distance < 10) {
echo "The two articles are very similar.";
} else {
echo "The two articles are not very similar.";
}
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Once you have calculated the similarity of two articles, you can use it to do a variety of things, such as:
I hope this helps!