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PHP5中文手册
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
返回值Returns the number of matching chars in both strings. |