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/lib/Drupal/Core/Database/Driver/sqlite/Connection.php, line 248

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);
}