Splitting out all phrases in a string of words

Posted on 2011-09-11
Last Modified: 2012-05-12
Hi all,

I'm looking for some efficient php code to do the following:

Consider an input string of "one two three four" (any numer of words delimited by spaces).

I would like to output all possible combinations of phrases and words in that sentance e.g. :

one two three four
one two three
one two
two three four
three four

Would like to then put them in a string comma seperated (e.g. one two three four, one two three, one two, one, two three four,...)

Doesn't have to be in that order but any help on this much appreciated - driving me mad!

Question by:dolythgoe
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LVL 10

Accepted Solution

Derokorian earned 250 total points
ID: 36519791
Wrote this, output what you were hoping for, added the vardump at the bottom to show what it looks like before imploding.

$test = "one two three four";
$rescount = 1;
$results = array();
$result[] = $test;

$words = explode(' ',$test);
$wordc = count($words);

for( $i=0; $i<$wordc; $i++ ) {
	for( $j=$wordc; $j>0; $j-- ) {
		$results[$rescount] = '';
		for( $k=$i; $k<$j; $k++ ) {
			$results[$rescount] .= ' '. $words[$k];
		if( !empty($results[$rescount]) ) $rescount++;
if( empty($results[$rescount]) ) unset($results[$rescount]);

echo implode(',',$results);

echo '<pre>';
echo '</pre>';

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LVL 110

Expert Comment

by:Ray Paseur
ID: 36519809
What would you want for the output from this:

one two two three

Thanks, ~Ray

Author Comment

ID: 36519810
That's just brilliant - thanks so much :)
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Author Comment

ID: 36519818
I've requested that this question be closed as follows:

Accepted answer: 0 points for dolythgoe's comment http:/Q_27302373.html#36519810

for the following reason:

Top reply in no time at all
LVL 10

Expert Comment

ID: 36519819
If the reply works, please accept it as the solution, not your own comment as that does not award points.

Author Comment

ID: 36519823
Opps trying to accept my own question!

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