metaphone=======================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==========<html><body><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" /></form><!--php code begins here --><?phpif(isset($_GET['submit'])){$str1 = $_GET['name1'];$str2 = $_GET['name2'];$meta_one=metaphone($str1);$meta_two=metaphone($str2);echo "metaphone code for ".$str1." is ". $meta_one;echo "<br />";echo "metaphone code for ".$str2." is ". $meta_two."<br>";if($meta_one==$meta_two){echo "metaphone codes are matching";}else{echo "metaphone codes are not matching";}}?></body></html>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 Exceptions: 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" Transformations: 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
