How can I get explode keywords for searching?

OK, I already know the explode way:

$keywords='One Two Three';
$array=explode(' ',$keywords);
// I will have array of: 'One', 'Two', 'Three'

PHP:

But incase Two or more word is double quoted

$keywords='"One Two" Three';
//$array=???
// I will have array of 2 element: 'One Two', 'Three'

PHP:

How can I do that?

 

In the array they need to be seperated by a common factor. Eg:

$keywords = 'One - Two - Three';
$array = explode('-', $keywords);

PHP:

If your needing 'One Two' and 'Three' you could seperate like so:

$array = '"One Two" - Three';

PHP:

But that would woutput "One Two" Three.

 

Oh, I Just want to parse the key word like Google does. A string: "One Two" Three will be broken into One Two, Three. I guess some Regular Expression must be used? Can somebody help?

 

Yes, regex is the answer

Try this:

	$test = '"This is" a test';
	$MyArray = array();
	
	$MyArray = preg_split( "/[\W]{1,4}/", $test );
	
	echo "<pre>";
	print_r( $MyArray );
	echo "</pre>";

PHP:

Brew

 

Not sure if there's a way to do that with a single regular expression, but this does work:

<?php

$query = 'This is what "I have" been "searching for!"';
$keywords = array();

while (preg_match('/(?:"([^"]+)"|([^\s]+))/', $query, $quotes))
{
	$keywords[] = trim(isset($quotes[2]) ? $quotes[2] : $quotes[1]);
	$query = str_replace($quotes[0], null, $query);
}

echo '<pre>' . print_r($keywords, true) . '</pre>';

?>

PHP:

 

Thanks, that works!


@Brewster: Nope, thanks but it doesn't work

 

Hi goldensea80

Just out of curiosity what string are you passing to my code? On my system the code outputs this:

Array
(
[0] =>
[1] => This
[2] => is
[3] => a
[4] => test
)

Brew

EDIT: Sorry, just re-read your initial question more closely... Nico is the winner!

 

He doesn't want to split the string on spaces if there are double quotes around it. Like Google does.

This.

$keywords='"One Two" Three';

PHP:

Sould become this:

Array
(
    [0] => One two
    [1] => Three
)

Code (markup):

 

Yeah, that's it!
Anyway, thank to all of you for your kindness and your willing to help