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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
static bool isInteger(String s) { int n = l(s); if (n == 0) ret false; int i = 0; if (s.charAt(0) == '-') if (++i >= n) ret false; while (i < n) { char c = s.charAt(i); if (c < '0' || c > '9') ret false; ++i; } ret true; }