PHP metaphone() function

PHP metaphone() function is predefined function. It is used to calculate the metaphone key of a string. It is useful to text search and text matching application.

It is phonetic algorithm developed by Lawrence Philips. The algorithm produces variable length keys as output.

Syntax:

Parameter	Description	Required/Optional
String	Specify input string.	Required
Length	Specify the max length of the megaphones key.	Optional

Example 1

<?php
$str="Hello PHP";
echo "Before using metaphone() function:".$str;
echo "<br>";
echo "After using metaphone() function: ".metaphone($str);
?>

Output:

Before using metaphone() function:Hello PHP
After using metaphone() function: HLFP

Example 2

<?php
$str = "Nose";
$str2 = "knows";
echo metaphone($str);
echo "<br>";
echo metaphone($str2);
?>

Output:

NS
NS

Example 3

<?php
var_dump(metaphone('programming'));
var_dump(metaphone('programmer'));
?>

Output:

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

Example 4

<?php
$str = "Nose";
$str2 = "knows";
echo metaphone($str,2);
echo "<br>";
echo metaphone($str2,2);
?>

Output:

NS
NS

Note: Given above example by using the length of parameter.

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PHP metaphone() function

Syntax:

Example 1

Example 2

Example 3

Example 4

Note: Given above example by using the length of parameter.

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