问题描述
当我想获取一个数组的成员并将其分配给一个变量时,它会向我返回错误:未定义的偏移量:0
$answers=Answer::where(
[
['questionid','=',$question['questionid']],['uniqid',$uniqCode]
]
)->get()
->toArray();
$answer=$answers[0]['answer'];
但是当我在赋值之前完全打印它时,它会正确返回值:
dd($answers[0]['answer']) ;
$answer=$answers[0]['answer'];
解决方法
首先,检查数组是否确实存在,你可以尝试类似
if(isset($answers[0])) {
//grab value here
$answer=$answers[0]['answer'];
}