像javascript一样动态为PHP对象增加方法

<span><?php
</span><span><em>/**
</em></span><span><em> * </em></span><span><em>超级方法
</em></span><span><em></em></span><span><em>* Class SuperMethod
</em></span><span><em> */
</em></span><span>class </span><span>SuperMethod{
</span><span>private </span><span>$_bind_function_map</span><span>=</span><span>array</span><span>()</span><span>;
</span><span>private </span><span>$_friend_call_in_progress</span><span>=</span><span>0</span><span>;
</span><span>function </span><span>__call</span><span>(</span><span>$name</span><span>, </span><span>$arguments</span><span>)
</span><span>    {
</span><span>if</span><span>(</span><span>isset</span><span>(</span><span>$this</span><span>-></span><span>_bind_function_map</span><span>[</span><span>$name</span><span>])){
</span><span>$this</span><span>-></span><span>_friend_call_in_progress</span><span>&#43;&#43;</span><span>;
</span><span>try</span><span>{
</span><span>$res</span><span>=call_user_func_array(</span><span>$this</span><span>-></span><span>_bind_function_map</span><span>[</span><span>$name</span><span>]</span><span>,</span><span>$arguments</span><span>)</span><span>;
</span><span>$this</span><span>-></span><span>_friend_call_in_progress</span><span>--</span><span>;
</span><span>}</span><span>catch </span><span>(\Exception </span><span>$e</span><span>){
</span><span>$this</span><span>-></span><span>_friend_call_in_progress</span><span>--</span><span>;
</span><span>throw </span><span>$e</span><span>;
</span><span>}
</span><span>return </span><span>$res</span><span>;
</span><span>}</span><span>else</span><span>{
</span><span>if</span><span>(</span><span>$this</span><span>-></span><span>_friend_call_in_progress</span><span>){
</span><span>$arguments</span><span>[</span><span>'_friend_call'</span><span>]=</span><span>$name</span><span>;
</span><span>return </span><span>call_user_func(</span><span>$this</span><span>,</span><span>$arguments</span><span>)</span><span>;
</span><span>}
</span><span>        }
</span><span>    }
</span><span>function </span><span>__invoke</span><span>(</span><span>$args</span><span>)
</span><span>    {
</span><span>if</span><span>(</span><span>isset</span><span>(</span><span>$args</span><span>[</span><span>'_friend_call'</span><span>])){
</span><span>$friend_call</span><span>=</span><span>$args</span><span>[</span><span>'_friend_call'</span><span>]</span><span>;
</span><span>unset</span><span>(</span><span>$args</span><span>[</span><span>'_friend_call'</span><span>])</span><span>;
</span><span>return </span><span>$this</span><span>-></span><span>$friend_call</span><span>(...</span><span>$args</span><span>)</span><span>;
</span><span>}
</span><span>    }
</span><span>function </span><span>__set</span><span>(</span><span>$name</span><span>, </span><span>$value</span><span>)
</span><span>    {
</span><span>if</span><span>(</span><span>$value </span><span>instanceof </span><span>Closure){
</span><span>$this</span><span>-></span><span>_bind_function_map</span><span>[</span><span>$name</span><span>]=</span><span>$value</span><span>-></span><span>bindTo</span><span>(</span><span>$this</span><span>)</span><span>;
</span><span>}
</span><span>    }
</span><span>function </span><span>__get</span><span>(</span><span>$name</span><span>)
</span><span>    {
</span><span>if</span><span>(</span><span>$this</span><span>-></span><span>_friend_call_in_progress</span><span>){
</span><span>return </span><span>$this</span><span>-></span><span>$name</span><span>;
</span><span>}
</span><span>    }
</span><span>}
</span><span>class </span><span>test </span><span>extends </span><span>SuperMethod{
</span><span>protected </span><span>$name</span><span>=</span><span>''</span><span>;
</span><span>public function </span><span>__construct</span><span>(</span><span>$name</span><span>=</span><span>''</span><span>)
</span><span>    {
</span><span>$this</span><span>-></span><span>name</span><span>=</span><span>$name</span><span>;
</span><span>}
</span><span>protected function </span><span>haha</span><span>(){
</span><span>        phpinfo()</span><span>;
</span><span>}
</span><span>}
</span><span>$o</span><span>=</span><span>new </span><span>test(</span><span>'xbs'</span><span>)</span><span>;
</span><span>//</span><span>里面可以访问对象私有以及受保护方法噢
</span><span>$o</span><span>-></span><span>say_hello</span><span>=</span><span>function</span><span>(){
</span><span>    var_dump(</span><span>$this</span><span>-></span><span>name</span><span>)</span><span>;
</span><span>$this</span><span>-></span><span>haha</span><span>()</span><span>;
</span><span>}</span><span>;
</span><span>$o</span><span>-></span><span>say_hello</span><span>()</span><span>;</span>