PHP soundex() Function

PHP String Functions

Example

Calculate the soundex key of "Hello":

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

Run Instance

Definition and Usage

The soundex() function calculates the soundex key of the string.

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

The soundex() function can be used in spelling check applications.

Note:The soundex() function creates the same key for words with similar pronunciation.

Tip:metaphone() More accurate than the soundex() function because metaphone() understands the basic pronunciation rules of English.

Syntax

soundex(string)
Parameter Description
string Required. Specifies the string to be checked.

Technical Details

Return Value: If successful, it returns the soundex key of the string, if failed, it returns FALSE.
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);
?>

Run Instance

PHP String Functions