{"id":145,"title":"\u6790\u6784\u65b9\u6cd5","good":0,"bad":0,"hit":2337,"created_at":"2015-01-12 14:44:39","content":"<p>\u6790\u6784\u65b9\u6cd5\uff1a\u5728\u5bf9\u8c61\u88ab\u9500\u552e\u65f6\u81ea\u52a8\u8c03\u7528\u7684\u65b9\u6cd5\uff0c\u7528\u4e8e\u91ca\u653e\u5bf9\u8c61\u6240\u5360\u7528\u7684\u989d\u5916\u8d44\u6e90\uff0c\u7528__desctruct\u5b9a\u4e49\uff1b<\/p><p>\u5bf9\u8c61\u88ab\u9500\u6bc1\u65f6\uff0c\u5bf9\u8c61\u6240\u5360\u7528\u7684\u8d44\u6e90\u4e0d\u4e00\u5b9a\u5b8c\u5168\u88ab\u9500\u6bc1\uff08\u5982\uff1a\u6570\u636e\u5e93\u8fde\u63a5\uff09\uff1b <br\/><\/p><p>&lt;?php<br\/><br\/>class Student{<br\/>&nbsp;&nbsp; &nbsp;<br\/>&nbsp;&nbsp; &nbsp;public $link;<br\/>&nbsp;&nbsp; &nbsp;<br\/>&nbsp;&nbsp; &nbsp;public function __construct(){<br\/>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;echo 1;<br\/>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;$this-&gt;link=mysql_connect(&#39;localhost&#39;,&#39;root&#39;,&#39;sa&#39;);<br\/>&nbsp;&nbsp; &nbsp;}<br\/><br\/>&nbsp;&nbsp; &nbsp;public function __destruct(){<br\/>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;<br\/>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;\/\/\u5bf9\u8c61\u88ab\u9500\u6bc1\u65f6$link\u94fe\u63a5\u8d44\u6e90\u4f9d\u7136\u5b58\u5728<br\/>&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;echo 2;<br\/>&nbsp;&nbsp; &nbsp;}<br\/>}<br\/><br\/>$o=new Student();<br\/>\/\/unset($o);\/\/\u5373\u4f7f\u4e0d\u9500\u6bc1\u5bf9\u8c61\uff0c\u5f53\u7a0b\u5e8f\u6267\u884c\u5230\u4ee3\u7801\u533a\u7ed3\u675f\u5904\uff0c\u4e5f\u4f1a\u81ea\u52a8\u9500\u6bc1\u5bf9\u8c61\uff0c\u8c03\u7528\u6790\u6784\u65b9\u6cd5\uff0c\u6b64\u65f6\u8f93\u51fa\u7ed3\u679c\u4f9d\u7136\u4e3a12<br\/>?&gt;<\/p><p><br\/><\/p>"}