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PHP metaphone() Function

Complete PHP String Reference

Definition and Usage

The metaphone() function calculates the metaphone key of a string.

A metaphone key represents how a string sounds if said by an English speaking person.

The metaphone() function can be used for spelling applications.

This function returns the metaphone key of the string on success, or FALSE on failure.

Syntax

metaphone(string,length)

Parameter	Description
string	Required. Specifies the string to check
length	Optional. Specifies the maximum length of the metaphone key

Tips and Notes

Note: The metaphone() function creates the same key for similar sounding words.

Note: The generated metaphone keys vary in length.

Tip: metaphone() is more accurate than the soundex() function, because metaphone() knows the basic rules of English pronunciation.

Example 1

<?php
echo metaphone("world");
?>

The output of the code above will be:

WRLT

Example 2

In this example we use the metaphone() function on two similar sounding words:

<?php
$str = "Sun";
$str2 = "Son";

echo metaphone($str);
echo "<br />";
echo metaphone($str2);
?>

The output of the code above will be:

SN
SN

Complete PHP String Reference

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