从PHP中的JSON数组中获取随机项[重复]

Question

我在使用以下 JSON 获取随机项时遇到问题

$str = file_get_contents("wisdomquotes.txt"); 
$array = json_decode($str, true); //Fine up to here
$rand = $array[array_rand($array)];//Returns entire array instead of a single random item

这里是 JSON：

{
    "quotes": [{
        "keywords": ["work"],
        "quote": " A stich in time saves nine"
    }, {
        "keywords": ["health"],
        "quote": " An apple a day keeps the doctor away."
    }, {
        "keywords": ["money"],
        "quote": " A penny save is a penny earned."
    }, {
        "keywords": ["work"],
        "quote": " You can't burn the candle at both ends."
    }, {
        "keywords": [""],
        "quote": "Tis better to light a candle than to curse the darkness"
    }]
}

获取随机物品的正确代码是什么？

Answer 1

这是因为您的案例中的主数组位于 quotes 子数组中。

$rand = $array['quotes'][\array_rand($array['quotes'])];

Answer 2

你可以试试这个：

$str = file_get_contents("wisdomquotes.txt"); 
$array = json_decode($str, true);
$rand = array_rand($array['quotes'], 1);
var_dump($array['quotes'][$rand]);

Answer 3

你可以定位$array['quotes']

array_rand($array['quotes'], 1);