关于php变量的变量的有关问题
【求助】关于php变量的变量的问题
针对于php的超级全局变量$_REQUEST
$_type = '_REQUEST';
var_dump($$_type);
Notice: Undefined variable: _REQUES
而如果$_type是_GET或者_POST再或者其它的变量则没有问题，请问我这是怎么回事呢？
------解决方案--------------------
这应该是一个 BUG
我的 php 是 5.3.6 表现与你的一样
但如果在 $_type = '_REQUEST'; 出现过 $_REQUEST
即
$_REQUEST;
$_type = '_REQUEST';
就不为空了
但是仍然是不对的， $_REQUEST 应包含 cookie 的内容
但至少 php 5.3.6 中的 $_REQUEST 没有
------解决方案--------------------
我的是5.2.6，没这问题
------解决方案--------------------
答案在这里
http://stackoverflow.com/questions/2078102/request-not-created-when-using-variable-variables
在php.ini把auto_globals_jit 关掉，就不提示notice了
http://www.php.net/manual/en/ini.core.php#ini.auto-globals-jit
------解决方案--------------------
试试开启这个
register_long_arrays = On
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