再来俩有意思的问题 json_decode 和zend 未知标记
1，关于json_decode 和 json_encode,
将数组json_encode 后存入cookie ,
取出的时候使用 json_decode 转换为对象
使用一次 json_decode 只能得到字符串
试了下 json_decode (json_decode ($cook1)) 居然得到对象了，
神马情况 ？
2，zend studio 9 中 如何添加 自定义的标记 让编辑器不警告提示，注：请勿回答关闭警告提示，偶想明白怎么添加自定义标记让编辑器不提示 未知标记
------解决方案--------------------
打包前是数组的话 你json_decode 返回值是obj 第二个参数设为true 返回值是array
打包前是字符串的话 你json_decode 返回值就是string
你第二次json_decode时 检控一下这个string的值 如果是json格式 返回值是obj 是普通string的话 返回值是string
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