PHP calculates the soundex key function soundex() of a string

Example

Calculate the soundex key of "Hello":

<?php
$str = "Hello";
echo soundex($str);
?>

Definition and usage

soundex() function calculates the soundex key of string .

The soundex key is a 4-character long alphanumeric string that represents the English pronunciation of a word.

The soundex() function can be used in spell checkers.

Note: The soundex() function creates the same key for words that sound similar.

Tip: metaphone() is more precise than the soundex() function because metaphone() understands the basic rules of English pronunciation.

Syntax

soundex(string)

Parameters	Description
string	Required. Specifies the string to check.

Technical details

Return value:	Returns the soundex key of the string if successful , and returns FALSE if it fails.
PHP version:	4+

##More examples

Example 1

Use the soundex() function for two words with similar pronunciation:

<?php
$str = "Assistance";
$str2 = "Assistants";

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

Split the string "Shanghai" into an array:

<?php
print_r(str_split("Shanghai"));
?>

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