hex oct ord 函数

1. hex()

   十六进制转十进制函数

2. oct()

   八进制转十进制函数

3. ord

   返回ascii字符数值

4. 示例

   hex/oct处理对象需要用单引号或双引号包围

   print hex("0xff"),"\n";
   
   print hex(0xff),"\n";       #incorrect result
   
   print oct("055"),"\n";
   
   print oct(055),"\n";        #incorrect result
   
   print ord("a"),"\n";
   
   print ord(a),"\n";
   

   

hex oct ord 函数