final public static function isEmptiable($fieldName) {
		
		$column = static::getColumnType($fieldName);
		
		if (is_null($column)) {
			return NULL;
		}
		
		$emptiables = ['CHAR','VARCHAR','TINYTEXT','TEXT','MEDIUMTEXT','BIGTEXT'];
		
		if (in_array($column->type, $emptiables) or ('ENUM' == $column->type and in_array('', $column->length))) {
			return TRUE;
		} else {
			return FALSE;
		}
		
		
	}
final public static function isEmptiable($fieldName) {
		
		$column = static::getColumnType($fieldName);
		
		if (is_null($column)) {
			return NULL;
		}
		
		$emptiables = ['CHAR','VARCHAR','TINYTEXT','TEXT','MEDIUMTEXT','BIGTEXT'];
		
		if (in_array($column->type, $emptiables) or ('ENUM' == $column->type and in_array('', $column->length))) {
			return TRUE;
		} else {
			return FALSE;
		}
		
		
	}
final public static function isEmptiable ( $ fieldName ) { $ column = static :: getColumnType ( $ fieldName ) ; if ( is_null ( $ column ) ) { return NULL ; } $ emptiables = [ 'CHAR' , 'VARCHAR' , 'TINYTEXT' , 'TEXT' , 'MEDIUMTEXT' , 'BIGTEXT' ] ; if ( in_array ( $ column -> type , $ emptiables ) or ( 'ENUM' == $ column -> type and in_array ( '' , $ column -> length ) ) ) { return TRUE ; } else { return FALSE ; } }
Check whether the DB-table-field is capable to store empty strings.

@param	string	DB-table-field name.

@return	bool|NULL
Check whether the DB - table - field is capable to store empty strings .