Error message

• Notice: Trying to access array offset on value of type int in element_children() (line 6595 of /var/www/html/rclub/web/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6595 of /var/www/html/rclub/web/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6595 of /var/www/html/rclub/web/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6595 of /var/www/html/rclub/web/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6595 of /var/www/html/rclub/web/includes/common.inc).
• Notice: session_start(): A session had already been started - ignoring in drupal_session_start() (line 287 of /var/www/html/rclub/web/includes/session.inc).
• Warning: Use of undefined constant php - assumed 'php' (this will throw an Error in a future version of PHP) in eval() (line 559 of /var/www/html/rclub/web/modules/php/php.module(80) : eval()'d code).
• Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /var/www/html/rclub/web/includes/common.inc).
• Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in menu_set_active_trail() (line 2405 of /var/www/html/rclub/web/includes/menu.inc).