php - Regex hash and colons -

i want use regular expression filter substrings string eg: hello world #level:basic #lang:java:php #...

i trying produce array structure this:

array  (     [0]=> hello world     [1]=> array            (               [0]=> level               [1]=> basic           )     [2]=> array            (               [0]=> lang               [1]=> java               [2]=> php           ) ) 

i have tried preg_match("/(.*)#(.*)[:(.*)]*/", $input_line, $output_array);

and have got is:

array (     [0] => hello world #level:basic #lang:java:php     [1] => hello world #level:basic      [2] => lang:java:php ) 

in case have apply regex few times indexes , apply regex filter colon out. question is: possible create better regex in 1 go? regex be? thanks

you can use :

$array = explode("#", "hello world #level:basic #lang:java:php"); foreach($array $k => &$v) {     $v = strpos($v, ":") === false ? $v : explode(":", $v); } print_r($array);