PHP Regex to match words with dash right infront and save to array? -

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i'm wondering kind of regex use extract words have dash infront of them in given string. i'm going using allow users omit words search results of website.

for example, have 

$str = "this search -test1 -test2";

i'm trying have save "test1" , "test2" array because have dash right infront.

could me out

use following pattern /\-(\w+)/. example:

$string = 'this search -test1 -test2'; $pattern = '/\-(\w+)/'; if(preg_match_all($pattern, $string, $matches)) {     $result = $matches[1]; } var_dump($result);

output:

array(2) {   [0] =>   string(5) "test1"   [1] =>   string(5) "test2" }

explanation:

/.../ delimiter chars  \-    dash (must escaped has special meaning in regex language  (...) special capture group. stores content between them in $matches[1]  \w+   @ least 1 ore more word characters

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