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Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /var/www/tb-usercake/models/config.php on line 51
public static String commonPrefix(String a, String b) { int i = 0; while (i < a.length() && i < b.length() && a.charAt(i) == b.charAt(i)) ++i; return a.substring(0, i); }