updating to PHP 5.5 – error messages

  • I had great help with the main issue uprading an very old WP install (2.0) to PHP 5.56.
    Now another error (but site is working):

    Strict Standards: Only variables should be assigned by reference in /kunden/xxx/webseiten/wp-includes/functions.php on line 590 and 696

    l 590:
    $_post = & $wpdb->get_row($query);
    l 696
    $_page = & $wpdb->get_row($query);

    another follow-up error (but working):

    Warning: Cannot modify header information – headers already sent by (output started at /kunden/xxx/webseiten/wp-includes/functions.php:590) in /kunden/xxx/webseiten/wp-admin/post.php on line 60

    line 57-60 is:

    if ( isset($_POST['save']) )
	$location = "post.php?action=edit&post=$post_ID";

header("Location: $location");

    Any help much appreciated!

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