php/' target='_blank'>PHP 变量、常量
变量：$var = "1000";
常量：define("ROOT","/tmp");
类常量：const aaa = 10;
类变量：同样还是$xxx;
全局变量: global $xxx; $GLOBALS['xxxx']

Ruby 变量、常量
变量：aa = 10 或者 _a = 10 小写字母或者下划线开头
常量：Ma = 10
实例变量：@hello = 10
类变量：@@t = 20
全局变量：$aa = 10

PHP基本的类实例化

<?php
class demo {
    function __construct($name) {
        $this -> name = $name;
    }
    function say() {
        echo $this -> name;
    }
    function __destruct() {
    }
}
$p = new demo("yang");
$p -> say();

Ruby基本的类实例化

class Hello
    def initialize( name ) 
        @name = name
    end
    # php function __construct

    def hello_rb
        puts "hello"+@name
    end

end
hi = Hello.new("phper.yang")
hi.hello_rb

PHP类的简单继承

class my {
    function say() {
        echo "hello ";
    }
}

class hhy extends my {
    function yang() {
        echo "yang";
    }
}
$p = new hhy();
$p -> say();
$p -> yang();

Ruby类的简单继承

class Hello
  def t1
     yang = "hello ruby"
     puts yang
  end
end

class Newhello < Hello
   def t2
      yphp = "hello php"
      puts yphp
   end
end

p = Newhello.new
p.t1
p.t2

ruby 的类名首字母必须大写