html标签中使用php变量，提示：undefined index: uid in /var/www//list.php
，list.php的具体代码如下：
hgetall(user:.$i); } /* var_dump($data) 的结果如下: array (size=3) 0 => array (size=0) empty 1 => array (size=4) 'uid' => string '1' (length=1) 'username' => string 'jjj' (length=3) 'password' => string '123' (length=3) 'age' => string '20' (length=2) 2 => array (size=4) 'uid' => string '2' (length=1) 'username' => string 'lamp' (length=4) 'password' => string '123' (length=3) 'age' => string '20' (length=2) */?>user list uid username age


回复内容： html标签中使用php变量，提示：undefined index: uid in /var/www//list.php
，list.php的具体代码如下：
hgetall(user:.$i); } /* var_dump($data) 的结果如下: array (size=3) 0 => array (size=0) empty 1 => array (size=4) 'uid' => string '1' (length=1) 'username' => string 'jjj' (length=3) 'password' => string '123' (length=3) 'age' => string '20' (length=2) 2 => array (size=4) 'uid' => string '2' (length=1) 'username' => string 'lamp' (length=4) 'password' => string '123' (length=3) 'age' => string '20' (length=2) */?>user list uid username age


echo 前 isset 下不就可以了吗
你的数组第第一个子元素为空啊找不到uid
php很多时候，很需要注意的一点就是要做好容错机制