PHP : metaphone() function
The metaphone() function is used to calculate the metaphone key of a string.
Metaphone is a phonetic algorithm developed by Lawrence Philips. The algorithm produces variable length keys as its output, as opposed to Soundex's fixed-length keys. Similar sounding words share the same keys. It uses a larger set of rules for English pronunciation. Metaphone keys are very useful for text search and text matching applications.
(PHP 4 and above)
|input_string||The input string.||Required||String|
|key_length||Maximum length of the metaphone key.||Optional||Integer|
Returns the metaphone key as a string, FALSE in failure.
Value Type: String.
<?php $str = "w3resource"; echo $str; echo "<br />"; $str1 = "dual"; $str2 = "dwell"; echo metaphone($str1); echo "<br />"; echo metaphone($str2); ?>
w3resource TL TWL
PHP: Tips of the Day
In PHP, there are two versions of logical AND and OR operators.
|$a and $b||Both $a and $b are true|
|$a && $b||Both $a and $b are true|
|$a or $b||Either $a or $b is true|
|$a || $b||Either $a or $b is true|
Note that the && and || opererators have higher precedence than and and or. See table below:
|Evaluation||Result of $e||Evaluated as|
|$e = false || true||True||$e = (false || true)|
|$e = false or true||False||($e = false) or true|
Because of this it's safer to use && and || instead of and and or.
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