PHP博客-初学者http://www.phpweblog.net/jimmy123/大家多多指教zh-cnFri, 05 Sep 2008 14:24:14 GMTFri, 05 Sep 2008 14:24:14 GMT60pass4sure 认证考试的权威http://www.phpweblog.net/jimmy123/archive/2008/03/08/2919.htmlwiliamwiliamSat, 08 Mar 2008 03:21:00 GMThttp://www.phpweblog.net/jimmy123/archive/2008/03/08/2919.htmlhttp://www.phpweblog.net/jimmy123/comments/2919.htmlhttp://www.phpweblog.net/jimmy123/archive/2008/03/08/2919.html#Feedback1http://www.phpweblog.net/jimmy123/comments/commentRss/2919.htmlhttp://www.phpweblog.net/jimmy123/services/trackbacks/2919.html 无标题文档 IT Certification exam
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wiliam 2008-03-08 11:21 发表评论
]]>php中foreach()的用法http://www.phpweblog.net/jimmy123/archive/2007/11/24/2382.htmlwiliamwiliamSat, 24 Nov 2007 03:29:00 GMThttp://www.phpweblog.net/jimmy123/archive/2007/11/24/2382.htmlhttp://www.phpweblog.net/jimmy123/comments/2382.htmlhttp://www.phpweblog.net/jimmy123/archive/2007/11/24/2382.html#Feedback0http://www.phpweblog.net/jimmy123/comments/commentRss/2382.htmlhttp://www.phpweblog.net/jimmy123/services/trackbacks/2382.htmlphp中foreach()的用法

foreach()有两种用法：
1： foreach(array_name as $value)
   {
      statement;
   }
这里的array_name是你要遍历的数组名，每次循环中，array_name数组的当前元素的值被赋给$value,并且数组内部的下标向下移一步，也就是下次循环回得到下一个元素。
 
2：foreach(array_name as $key => $value)
   {
       statement; 
    }
  这里跟第一种方法的区别就是多了个$key,也就是除了把当前元素的值赋给$value外，当前元素的键值也会在每次循环中被赋给变量$key。键值可以是下标值，也可以是字符串。比如book[0]=1中的“0”，book[id]="001"中的“id”.


wiliam 2007-11-24 11:29 发表评论
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