如何将2个字符串与分隔符连接在一起？ [关闭]

I have a string like this $value[0] = "8000297c - 1360598144 "

I explode them into 2 pieces by doing this : $elements = explode('-', $value[0]);

Then I created 2 variables to store them :

$first = strtolower($elements[0]); // 8000297c 
$last  = strtoupper($elements[1]); // 1360598144

Now- after formatting them, I want to join them back to the original format like this

• $first."-".$last

I was thinking to use implode() function, and I tried

• $polish_sku = implode("-", $first, $last); - then, I got this :

I hope someone don't mind and point out what I did wrong. :D

if you want to use implode

implode("-", array($first, $last));

or just concat them ?

$first . "-" . $last

or use printf/sprintf ?

printf("%s-%s", $first, $last)

$polish_sku = implode("-", array($first, $last)); 

would work if you want to use implode

$polish_sku = implode("-", $first, $last); 

should be

$polish_sku = implode("-", array($first, $last));

Moreover you can simply take advantage of string concatenation like

$polish_sku = $first.'-'.$last

or

$polish_sku = sprintf("%s-%s", $first, $last);

$polish_sku = implode("-", $elements);

if $elements have more than two elements:

$polish_sku = implode("-", array($elements[0],$elements[1]));

Try this:

$polish_sku = implode("-", array($first, $last));

implode takes an array as the second parameter.