1     $name = "fakeface";2     $myname =substr($name,0,3);//输出前面三个字符 fak3     print $myname;4     $name = strtoupper($name); //小写5     print $name;6     $name = strtolower($name);、、大写7     print $name;8     $position = strpos($name,"c");//输出c的位置9     print $position;