function Connection::sqlFunctionConcatWs

SQLite compatibility implementation for the CONCAT_WS() SQL function.

See also

http://dev.mysql.com/doc/refman/5.6/en/string-functions.html#function_c…

File

core/modules/sqlite/src/Driver/Database/sqlite/Connection.php, line 279

Class

Connection

SQLite implementation of \Drupal\Core\Database\Connection.

Namespace

Code

public static function sqlFunctionConcatWs() {
  $args = func_get_args();
  $separator = array_shift($args);
  // If the separator is NULL, the result is NULL.
  if ($separator === FALSE || is_null($separator)) {
    return NULL;
  }
  // Skip any NULL values after the separator argument.
  $args = array_filter($args, function ($value) {
    return !is_null($value);
  });
  return implode($separator, $args);
}