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Riverview Church

SIMILAR_TEXT

Calculate the similarity between two strings

SYNTAX

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

PARAMETERS

first

The first string.

second

The second string.

Note: Swapping the first and second may yield a different result.

percent

By passing a reference as third argument, similar_text() will calculate the similarity in percent, by dividing the result of similar_text() by the average of the lengths of the given strings times 100.

RETURN

Returns the number of matching chars in both strings. The number of matching characters is calculated by finding the longest first common substring, and then doing this for the prefixes and the suffixes, recursively. The lengths of all found common substrings are added.

EXAMPLES

FIRST SECOND

1

PERCENT

15.384615384615

SWAP

4 44.444444444444
6 66.666666666667

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