PHP - Function Levenshtein

Syntax

int levenshtein ( string $str1 , string $str2 )

It is used calculate Levenshtein distance between two strings

It returns the levenshtein distance between two arguments strings or else it returns -1 on false case

Sr.No	Parameters & Description
1	str1 One of the strings being evaluated for Levenshtein distance.
2	str2 Second strings being evaluated for Levenshtein distance.
3	cost_ins Defines the cost of insertion.
4	cost_del Defines the cost of deletion.

Try out the following example

<?php
   echo 'the distance between two strings is ';
   echo levenshtein("Hello World","ello World");
?>

This will produce following result − −

the distance between two strings is 1

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