PHP：计算一个stdClass对象
我有一个从json_decode创建的stdClass对象，当我运行count（$
obj）函数时不会返回正确的数字。该对象具有30个属性，但count（）函数的返回值为1。
有任何想法吗？
以下是其中一个对象的示例。（我正在从Twitter请求每日趋势信息）。如果此对象具有多个属性，则count（$ obj）等于1。
[trends] => stdClass Object (
[2009-08-21 11:05] => Array
(
[0] => stdClass Object
(
[query] => "Follow Friday"
[name] => Follow Friday
)
[1] => stdClass Object
(
[query] => "Inglourious Basterds" OR "Inglorious Basterds"
[name] => Inglourious Basterds
)
[2] => stdClass Object
(
[query] => Inglourious
[name] => Inglourious
)
[3] => stdClass Object
(
[query] => #songsincode
[name] => #songsincode
)
[4] => stdClass Object
(
[query] => #shoutout
[name] => #shoutout
)
[5] => stdClass Object
(
[query] => "District 9"
[name] => District 9
)
[6] => stdClass Object
(
[query] => #howmanypeople
[name] => #howmanypeople
)
[7] => stdClass Object
(
[query] => Ashes OR #ashes
[name] => Ashes
)
[8] => stdClass Object
(
[query] => #youtubefail
[name] => #youtubefail
)
[9] => stdClass Object
(
[query] => TGIF
[name] => TGIF
)
[10] => stdClass Object
(
[query] => #wish09
[name] => #wish09
)
[11] => stdClass Object
(
[query] => #watch
[name] => #watch
)
[12] => stdClass Object
(
[query] => Avatar
[name] => Avatar
)
[13] => stdClass Object
(
[query] => Ramadhan
[name] => Ramadhan
)
[14] => stdClass Object
(
[query] => Goodnight
[name] => Goodnight
)
[15] => stdClass Object
(
[query] => iPhone
[name] => iPhone
)
[16] => stdClass Object
(
[query] => #iranelection
[name] => #iranelection
)
[17] => stdClass Object
(
[query] => Apple
[name] => Apple
)
[18] => stdClass Object
(
[query] => "Usain Bolt"
[name] => Usain Bolt
)
[19] => stdClass Object
(
[query] => H1N1
[name] => H1N1
)
)
)
回答：
问题在于count的目的是对数组中的索引进行计数，而不是对对象的属性进行计数（除非它是实现Countable接口的自定义对象）。尝试像下面那样将对象转换为数组，看看是否有帮助。
$total = count((array)$obj);简单地将对象转换为数组并不总是可行，但是作为一个简单的stdClass对象，它应该可以在这里完成工作。
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