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metaphoneCalcule la clé metaphone


metaphone(string $string, int $max_phonemes = 0): string

Calcule la clé metaphone de string.

metaphone() est similaire à la fonction soundex() : elle créée une clé similaire pour des mots dont la prononciation est proche. C'est une fonction qui est plus précise que soundex() car elle prend en compte la prononciation anglaise. La clé metaphone générée est de taille variable.

Metaphone a été développée par Lawrence Philips <lphilips at verity dot com>. Cette méthode est décrite dans le livre ["Practical Algorithms for Programmers", Binstock & Rex, Addison Wesley, 1995].

Liste de paramètres


La chaîne d'entrée.


Ce paramètre restreint la clé métaphone retournée à une longueur de max_phonemes caractères. Cependant, les phonèmes résultant sont toujours transcrit complètement, donc la longueur de la chaîne résultant peut être légèrement plus longue que max_phonemes. La valeur par défaut est 0, ce qui signifie qu'aucune limitation ne sera appliquée.

Valeurs de retour

Retourne la clé metaphone, sous la forme d'une chaîne de caractères.


Version Description
8.0.0 Cette fonction retournait false en cas d'échec.


Exemple #1 Exemple avec metaphone()


L'exemple ci-dessus va afficher :

string(7) "PRKRMNK"
string(6) "PRKRMR"

Exemple #2 Utilisation du paramètre max_phonemes

(metaphone('programming', 5));
var_dump(metaphone('programmer', 5));

L'exemple ci-dessus va afficher :

string(5) "PRKRM"
string(5) "PRKRM"

Exemple #3 Utilisant le paramètre de max_phonemes

Dans cette exemple, metaphone() est avisé de produire une chaîne de cinq caractères, mais ceci nécessiterai de séparer le phonème final ('x' est supposé d'être transcrit en 'KS'), donc la fonction retourne une chaîne de six caractères.

(metaphone('Asterix', 5));

L'exemple ci-dessus va afficher :

string(6) "ASTRKS"

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User Contributed Notes 6 notes

mail at spam-off dot iaindooley dot com
20 years ago
you can use the metaphone function quite effectively with phrases by taking the levenshtein distances between two metaphone codes, and then taking this as a percentage of the length of the original metaphone code. thus you can define a percentage error, (say 20%) and accept only matches that are closer than that. i've found this works quite effectively in a function i am using on my website where an album name that the user entered is verified against existing album names that may be similar. this is also an excellent way of people being able to vaguely remember a phrase and get several suggestions out of the database. so you could type "i stiched nine times" with an error percentage of, say, 50 and still get 'a stitch in time saves nine' back as a match.
php at casadebender dot com
16 years ago
A double metaphone pecl module is available:
Vipindas K.S
16 years ago
The metaphone() function can be used for spelling applications.This function returns the metaphone key of the string on success, or FALSE on failure.Its main use is when you are searching a genealogy database. check to see if a metaphone search is offered. It is also useful in making/searching family tree.
Given below is a simple code that calculates and compares two strings to find whether its metaphone codes are equivalent.

html code
<form action="test.php" name="test" method="get">
Name1:<input type="text" name="name1" /><br />
Name2:<input type="text" name="name2" /><br />
<input type="submit" name="submit" value="compare" />

<!--php code begins here -->

$str1 = $_GET['name1'];
$str2 = $_GET['name2'];
"metaphone code for ".$str1." is ". $meta_one;
"<br />";
"metaphone code for ".$str2." is ". $meta_two."<br>";
"metaphone codes are matching";
"metaphone codes are not matching";


Metaphone algorithm was developed by Lawrence Philips.

Lawrence Philips' RULES follow:

The 16 consonant sounds:
|--- ZERO represents "th"
B X S K J T F H L M N P R 0 W Y


Beginning of word: "ae-", "gn", "kn-", "pn-", "wr-" ----> drop first letter
"Aebersold", "Gnagy", "Knuth", "Pniewski", "Wright"

Beginning of word: "x" ----> change to "s"
as in "Deng Xiaopeng"

Beginning of word: "wh-" ----> change to "w"
as in "Whalen"


B ----> B unless at the end of word after "m", as in "dumb", "McComb"

C ----> X (sh) if "-cia-" or "-ch-"
S if "-ci-", "-ce-", or "-cy-"
SILENT if "-sci-", "-sce-", or "-scy-"
K otherwise, including in "-sch-"

D ----> J if in "-dge-", "-dgy-", or "-dgi-"
T otherwise

F ----> F

G ----> SILENT if in "-gh-" and not at end or before a vowel
in "-gn" or "-gned"
in "-dge-" etc., as in above rule
J if before "i", or "e", or "y" if not double "gg"
K otherwise

H ----> SILENT if after vowel and no vowel follows
or after "-ch-", "-sh-", "-ph-", "-th-", "-gh-"
H otherwise

J ----> J

K ----> SILENT if after "c"
K otherwise

L ----> L

M ----> M

N ----> N

P ----> F if before "h"
P otherwise

Q ----> K

R ----> R

S ----> X (sh) if before "h" or in "-sio-" or "-sia-"
S otherwise

T ----> X (sh) if "-tia-" or "-tio-"
0 (th) if before "h"
silent if in "-tch-"
T otherwise

V ----> F

W ----> SILENT if not followed by a vowel
W if followed by a vowel

X ----> KS

Y ----> SILENT if not followed by a vowel
Y if followed by a vowel

Z ----> S
Ray.Paseur often uses Gmail
11 years ago
Metaphone() apparently ignores non-English characters. Comparing Plaçe TO Place yields "PL" and "PLS." A similar result comes from soundex().
isloera at usedformyjunk dot com
9 years ago
I changed my domain so the code for spanish_methaphone is here

Please update the link ;-)
isloera at usedformyjunk dot com
9 years ago
I changed my domain so the code for spanish_methaphone is here

Please update the link ;-)
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