'zero integer is not part of null' => array(NULL, 0),
'zero integer is not part of empty string' => array('', 0),
'integer is not part of string with same integer casted to string' => array('24', 24),
'string is not part of integer with same number catest to integer' => array(24, '24'),
'integer is not part of string starting with same integer' => array('24 Bier bitte', 24),