我要做的基本上是在数组中选择一个数组，并打印我想打印的内容。这是数组
{"success":true,"rgInventory":{"3480848569":{"id":"3480848569","classid":"991959905","instanceid":"0","amount":"1","pos":1},"3480576615":{"id":"3480576615","classid":"937248085","instanceid":"188530139","amount":"1","pos":2},"3480546604":{"id":"3480546604","classid":"1289504012","instanceid":"188530139","amount":"1","pos":3},"3480019616":{"id":"3480019616","classid":"1287503583","instanceid":"188530139","amount":"1","pos":4},"3480018692":{"id":"3480018692","classid":"1287539933","instanceid":"188530139","amount":"1","pos":5},"3468858273":{"id":"3468858273","classid":"310796325","instanceid":"188531406","amount":"1","pos":6},"3461024351":{"id":"3461024351","classid":"1285429560","instanceid":"0","amount":"1","pos":7},"3458814606":{"id":"3458814606","classid":"1285140836","instanceid":"188531307","amount":"1","pos":8},"3456892821":{"id":"3456892821","classid":"1283034897","instanceid":"188530398","amount":"1","pos":9},"3446207634":{"id":"3446207634","classid":"1280315186","instanceid":"0","amount":"1","pos":10},"3243469958":{"id":"3243469958","classid":"1232873338","instanceid":"480085569","amount":"1","pos":11},"3144270103":{"id":"3144270103","classid":"1290987654","instanceid":"1210747767","amount":"1","pos":12}}
我想打印"rgInventory"，在这个数组中，我不仅想打印主要项目，还想打印其中的一些内容，如id和classid。
这是我的代码。
<?php
if(empty($_SESSION['steamid'])){
echo 'Please sign in to view your items.';
}else{
$id = $steamprofile['steamid'];
$key = 'xxxxxxxxxxxxxxxxxxxxxxxxxx';
if($id != null){
$link = file_get_contents('http://steamcommunity.com/profiles/'.$id.'/inventory/json/730/2');
$inventory = json_decode($link, true);
//print_r ($inventory);
print(sizeof($inventory));
foreach($inventory as $item => $id){
for($x = 0; sizeof($item[1]) <= $x; $x+=0){
echo 'ID: '.$id;
}
}
}
}
?>
我只是想弄清楚这是怎么回事。数组有点让我困惑，所以任何解释都会有所帮助，非常感谢。
获取json字符串并在末尾添加花括号，然后使用json_decode
获取数据。
$link = '{"success":true,"rgInventory":{"3480848569":{"id":"3480848569","classid":"991959905","instanceid":"0","amount":"1","pos":1},"3480576615":{"id":"3480576615","classid":"937248085","instanceid":"188530139","amount":"1","pos":2},"3480546604":{"id":"3480546604","classid":"1289504012","instanceid":"188530139","amount":"1","pos":3},"3480019616":{"id":"3480019616","classid":"1287503583","instanceid":"188530139","amount":"1","pos":4},"3480018692":{"id":"3480018692","classid":"1287539933","instanceid":"188530139","amount":"1","pos":5},"3468858273":{"id":"3468858273","classid":"310796325","instanceid":"188531406","amount":"1","pos":6},"3461024351":{"id":"3461024351","classid":"1285429560","instanceid":"0","amount":"1","pos":7},"3458814606":{"id":"3458814606","classid":"1285140836","instanceid":"188531307","amount":"1","pos":8},"3456892821":{"id":"3456892821","classid":"1283034897","instanceid":"188530398","amount":"1","pos":9},"3446207634":{"id":"3446207634","classid":"1280315186","instanceid":"0","amount":"1","pos":10},"3243469958":{"id":"3243469958","classid":"1232873338","instanceid":"480085569","amount":"1","pos":11},"3144270103":{"id":"3144270103","classid":"1290987654","instanceid":"1210747767","amount":"1","pos":12}}}';
$inventory = json_decode($link, true);
if ($inventory['success']) { print "SUCCESS = TRUE<br>"; }
foreach ($inventory['rgInventory'] as $rgInventory) {
foreach ($rgInventory as $key => $value) {
print "$key=$value, ";
}
print "<br>";
}
这将输出:
SUCCESS = TRUE
id=3480848569, classid=991959905, instanceid=0, amount=1, pos=1,
id=3480576615, classid=937248085, instanceid=188530139, amount=1, pos=2,
id=3480546604, classid=1289504012, instanceid=188530139, amount=1, pos=3,
id=3480019616, classid=1287503583, instanceid=188530139, amount=1, pos=4,
id=3480018692, classid=1287539933, instanceid=188530139, amount=1, pos=5,
id=3468858273, classid=310796325, instanceid=188531406, amount=1, pos=6,
id=3461024351, classid=1285429560, instanceid=0, amount=1, pos=7,
id=3458814606, classid=1285140836, instanceid=188531307, amount=1, pos=8,
id=3456892821, classid=1283034897, instanceid=188530398, amount=1, pos=9,
id=3446207634, classid=1280315186, instanceid=0, amount=1, pos=10,
id=3243469958, classid=1232873338, instanceid=480085569, amount=1, pos=11,
id=3144270103, classid=1290987654, instanceid=1210747767, amount=1, pos=12,
您可以使用在线工具检查json编码，如http://json.parser.online.fr/
另外，当您在处理输出的各种数组时，您可以使用var_dump()
。
var_dump($rgInventory);
，它会告诉你数组的组成，这样你就知道如何找到你需要的部分。
我明白了。
if ($inventory['success']) { print "SUCCESS = TRUE<br>"; }
foreach ($inventory['rgDescriptions'] as $rgDescription) {
for($i = 0; sizeof($rgDescription['market_name']) > $i; $i++){
if(isset($rgDescription['market_name'])){
print '<td>'.$rgDescription['market_name'].'</td>';
}
}
}
谢谢Dean给我指出了正确的方向。