Display the drop-down list

join()

« jewishtojd | json_decode »
<?php
$string 
join (
    
// string $glue
    
  // array $pieces
);
?>
Result
$string = 'lastname,email,phone'
Examples
#1 join  (",",
 [
=> "lastname"=> "email"=> "phone"])
#2 join  ("hello",
 [])
See also
implode