求教一个关于对象数组的有关问题

Array ( 
[0] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 1 ) 
[1] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 1333353649:1 )
[2] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => flash )
[3] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbd5f8c4dbe )
[4] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => http://www.baidu.com ) 
[5] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbd6154b2a7 ) 
[6] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 这是一个地址文件 ) 
[7] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbd9d8b1b04 ) 
[8] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 010-100000 ) 
[9] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbd9ed176ed ) 
[10] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => http://www.Google.com ) 
[11] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbda0cc2f65 ) 
[12] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 什么都没有 ) 
[13] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbda2cce3cf ) 
[14] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 汉语 ) 
[15] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbdad643aa0 ) 
[16] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => FM ) 
[17] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbdbc2bbc73 ) 
[18] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 999.8 ) 
[19] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbdbd8600a5 ) 
[20] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 200000000 ) 
[21] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecbdc0b38fe2 ) 
[22] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 90 ) 
[23] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => ) 
[24] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecc8cb6be29c ) 
[25] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => ) 
[26] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => field_4ecc97529e9f4 ) 
[27] => stdClass Object ( [post_title] => 测试标题基本一样啊 [meta_value] => 176
 ) )