Php – percentage-based string comparison in php


I'm looking for a library in PHP that will allow me to compare two strings, and determine if they similar.
For example:

apple apple 100%
apple aple  80%

and so forth.
any ideas?

Best Solution

similar_text — Calculate the similarity between two strings


int similar_text ( string $first , string $second [, float &$percent ] )

This calculates the similarity between two strings as described in Programming Classics: 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...

Does exactly that.