new variable as mix of other variables

i am trying to figure out how to get a new variable as mix of other variables. Below code:

		$results = array("a","b","c","d");
		shuffle($results);
		
		foreach ($results as $result) {
			echo "$result";
		}

Code (markup):

outputs sth like: dbca
and i would like to make a variable $sth = dbca

so how can i write sth like $sth = foreach ($results as $result) { echo "$result";}

thanks for your help! I am still learning php.

 

$sth = "";
foreach ($results as $result) {
$sth .= $result;
}

 

thanks a lot

 

I would recommend using:

$sth = implode('', $results);

PHP:

 

try pls this codes.

 

this is same he posted

$results = array("a","b","c","d");
shuffle($results);

foreach ($results as $result) {
 $sth .= $result;
}  

PHP:

and you're done