PHP随机生成器从数组问题

Question

所以我做了一些研究并修复了大多数问题，但我找不到为什么这会给我一个Notice: Undefined index: in Line 344如果你们有任何建议，我将不胜感激。D

这是我的数组:

$quote = array(
  1 => array(
    "quote" => 'The early bird gets the worm, but the second mouse gets the cheese...',
    "name" => 'Stephen Wright'
    ),
  2 => array(
    "quote" => 'Your time is limited, so dont waste it living someone elses life.',
    "name" => 'Steve Jobs'
    ),
  3 => array(
    "quote" => 'When one door closes, another one opens. Or you could jut re-open the closed door. Because thats how doors work.',
    "name" => "Anon."
    ),
  4 => array(
    "quote" => "The two most important days in your life are the day you are born and the day you find out why.",
    "name" => "Mark Twain"
    ),
  5 => array(
    "quote" => "Before you criticize someone, you should walk a mile in their shoes, that way when you criticize them, you're a mile away and you have their shoes.",
    "name" => "Anon."
    ),
  );
  $random=array_rand($quote,1);

和我的输出:[这是第344行]

<?php
    echo $quote[$random[0]]
?>

Answer 1

如果您使用array_rand()只获得1个数组键，那么您不会获得数组，只会获得键。正如您在手册中看到的:

当只选取一个表项时，array_rand()返回随机表项的键。否则，返回随机条目的键数组。[…]

在此之后，你尝试访问数字作为一个数组，这是行不通的。因此只需删除索引，例如

echo $quote[$random]
                 //^ See here removed

因为它是一个二维数组，如果你想用echo来打印这个值，你也必须指定第二维数组，例如

echo $quote[$random]["quote"];
echo $quote[$random]["name"];