2010/1/11 Richard Quadling <rquadling@xxxxxxxxxxxxxx>:
> 2010/1/11 omar zorgui <omarzorgui@xxxxxxxxx>:
>> $sentences[] = "this is a example sentence";
>> $sentences[] = "a this is example sentence";
>> $sentences[] = "example this is a sentence";
>> $sentences[] = "this is a example sentence for a function";
>
>
> <?php
> // Define data.
> $Sentences = array
> (
> "this is a example sentence",
> "a this is example sentence",
> "example this is a sentence",
> "this is a example sentence for a function",
> );
>
> // Record hashes of the sorted words in each sentence.
> $Hashes = array();
> $Reduced = array_filter
> (
> $Sentences,
> function($Sentence)
> use(&$Hashes)
> {
> // Explode the sentence into words but forced to lower case.
> $Words = explode(' ', strtolower($Sentence));
>
> // Sort the words
> sort($Words);
>
> // If the hash of the serialized words array is not already known
> if (!in_array($Hash = md5(serialize($Words)), $Hashes))
> {
> // then add it and return true.
> $Hashes[] = $Hash;
> return True;
> }
> else
> {
> // else return false to filter out this sentence.
> return False;
> }
> }
> );
>
> // Show the reduced sentences.
> print_r($Reduced);
> ?>
>
>
> outputs ...
>
> Array
> (
> [0] => this is a example sentence
> [3] => this is a example sentence for a function
> )
>
>
>
> --
> -----
> Richard Quadling
> "Standing on the shoulders of some very clever giants!"
> EE : http://www.experts-exchange.com/M_248814.html
> Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
> ZOPA : http://uk.zopa.com/member/RQuadling
>
Is that what you wanted?
--
-----
Richard Quadling
"Standing on the shoulders of some very clever giants!"
EE : http://www.experts-exchange.com/M_248814.html
Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731
ZOPA : http://uk.zopa.com/member/RQuadling
