Question

我是新手，我正在尝试使用PHP提取某些JSON API。在这种情况下，它是ETH_USD。下面是该API的代码段。

{“ symbol”：“ ETH_USD”，“ volumen24hours”：398.18320159，“ ask”：235.9，“ bid”：212.50000001，“ lastPrice”：213.48283633}，{“ symbol”：“ ETH_EUR”，“ volumen24hours”： 101.79246082，“问”：191.51196436，“出价”：191.51196436，“最后价格”：191.51196436}，{“符号”：“ ETH_ARS”，“ volumen24hours”：56.42036715，“问”：9365.12240119，“出价”：8952，“最后价格” “：9365.12240119}，

以下是我的PHP代码，直到现在。我如何获取ETH_USD数据？任何帮助表示赞赏。

<?php

$url = "https://www.website.com/api/ticker?format=json";
$fgc = file_get_contents($ur);
$json = json_decode($fgc, true);

$price = $json["lastPrice"];
$high = $json["ask"];
$low = $json["bid"];
$open = $json["open"];

if($open < $price){
//price went up
    $indicator = "+"
    $change = $price - $open;
    $percent = $change / $open;
    $percent = $percent * 100;
    $percentChange = $indicator.number_format($percent, 2);
    $color = "green";
}
if($open > $price){
//price went down
    $indicator = "-"
    $change = $open - $price;
    $percent = $change / $open;
    $percent = $percent * 100;
    $percentChange = $indicator.number_format($percent, 2);
    $color = "red";
}
?>

Answer 1

您可以为此目的使用array_filter：

$json = '[{
    "symbol": "ETH_USD",
    "volumen24hours": 398.18320159,
    "ask": 235.9,
    "bid": 212.50000001,
    "lastPrice": 213.48283633
}, {
    "symbol": "ETH_EUR",
    "volumen24hours": 101.79246082,
    "ask": 191.51196436,
    "bid": 191.51196436,
    "lastPrice": 191.51196436
}, {
    "symbol": "ETH_ARS",
    "volumen24hours": 56.42036715,
    "ask": 9365.12240119,
    "bid": 8952,
    "lastPrice": 9365.12240119
}]';


$new = array_filter(json_decode($json, true), function ($var) {
    return ($var['symbol'] == 'ETH_USD');
});

如何使用PHP从API JSON请求中获取特定数据

1 个答案: