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Finding similarity in strings with similar_text | Loop and Break

Finding similarity in strings with similar_text

by · November 9, 2013

similar_text calculates the similarity between two strings implementing the World’s Best Algorithms by Oliver (ISBN 0-131-00413-1). Note that this implementation does not use a stack as in Oliver’s pseudo code, but recursive calls which may or may not speed up the whole process. Note also that the complexity of this algorithm is O(N**3) where N is the length of the longest string.

Example

<?php
$firstString = 'this world is very beautiful';
$secondString = 'this world is very beautiful and peoples are too good';

similar_text($firstString, $secondString, $percent);
echo $percent . "<br>";

$secondString = 'are u crazy';

similar_text($firstString,$secondString, $percent);
echo $percent;

?>

Output :

69.135802469136
15.384615384615
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