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PHP soundex() function

PHP soundex() function is used to calculate the soundex key of a string. Its key has property and can be used to search in database where pronunciation is known but not the spelling.

Soundex function is described by Donald Knuth.

Syntax:

Parameter Description Required/Optional
String Specify the string to check Required.

Example 1

Output:

Before using soundex() function:you know PHP
After using soundex() function :Y251

Example 2

Output:

K500
N000

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