Php 非法字符串偏移量';键';
我有以下代码:Php 非法字符串偏移量';键';,php,json,rest,Php,Json,Rest,我有以下代码: // Champion name and splash art $endpointChampion = file_get_contents("https://global.api.riotgames.com/api/lol/static-data/BR/v1.2/champion/".$championMastery."?api_key=MYKEY"); $jsonChampion = json_decode($endpointChampion, true); foreach
// Champion name and splash art
$endpointChampion = file_get_contents("https://global.api.riotgames.com/api/lol/static-data/BR/v1.2/champion/".$championMastery."?api_key=MYKEY");
$jsonChampion = json_decode($endpointChampion, true);
foreach ($jsonChampion as $champion) {
if (isset($jsonChampion['key'])) {
$championKey = $champion['key'];
}
}
但此$championKey变量返回“o”,屏幕上会提示3条警告:
警告:第41行E:\xampp\htdocs\riot\index.php中的非法字符串偏移量“key”
我还尝试使用isset()
验证条目,但似乎无法正常工作
$championMastery在此处检索:
$endpointMastery = file_get_contents("https://br.api.riotgames.com/championmastery/location/BR1/player/8083198/champions?api_key=MYKEY");
$jsonMastery = json_decode($endpointMastery, true);
foreach ($jsonMastery as $mastery) {
$championMastery = $mastery['championId'];
$masteryLevel = $mastery['championLevel'];
}
您会遇到错误,因为API返回一维数组,
$champion
是foreach($jsonChampion作为$champion)
中的字符串值。可以修复以下问题:
foreach ($jsonChampion as $champion) {
if (isset($jsonChampion['key'])) {
$championKey = $jsonChampion['key'];
}
}
顺便说一句,
$jsonChampion
是一维数组,因此您可以检索$championKey
,而无需编写foreach循环,如下所示:
if(is_array($jsonChampion) && isset($jsonChampion['key'])){
$championKey = $jsonChampion['key'];
}
为什么要在
$jsonChampion
和$champion
之间切换?isset($jsonChampion['key'])
需要isset($champion['key'])
打印$jsonChampion
的输出,并向我们显示foreach循环完全没有必要,谢谢@IgnacioVazquez Abrams的指示灯。我只是删除它并设置$championKey=$jsonChampion['key'];是的,我现在意识到了。我可以不用这个foreach读取更多的值吗?如果我的意思是,在这里面。基于你的场景,如果它是一维数组,那么你不需要写foreach循环。您可以通过数组['key']访问值