Strings
PHP Manual

similar_text

(PHP 4, PHP 5)

similar_text — Calculate the similarity between two strings

说明

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

This calculates the similarity between two strings as described in Oliver [1993]. 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.

参数

first

The first string.

second

The second string.

percent

By passing a reference as third argument, similar_text() will calculate the similarity in percent for you.

返回值

Returns the number of matching chars in both strings.

参见


Strings
PHP Manual