Javascript 如何在PHP中从JSON中删除密钥？

如果在数组中找到键“src”，如何从这个JSON中删除它

$json = '[{"label":"360","file":"http://aaa","src":"http://aaa"},
{"label":"480","file":"http://bbb","src":"http://bbb"},
{"label":"720","file":"http://ccc","src":"http://ccc"},
{"label":"1080","file":"http://ddd","src":"http://ddd"}]';

预期的最终结果是：

$json = '[{"label":"360","file":"http://aaa"},
{"label":"480","file":"http://bbb"},
{"label":"720","file":"http://ccc"},
{"label":"1080","file":"http://ddd"}]';

---

好吧，假设您的json是正确的（上面没有，因为它周围缺少[]），更正如下

$json = '[{"label":"360","file":"http://aaa","src":"http://aaa"},{"label":"480","file":"http://bbb","src":"http://bbb"},{"label":"720","file":"http://ccc","src":"http://ccc"},{"label":"1080","file":"http://ddd","src":"http://ddd"}]';

$decoded = json_decode($json, true);

foreach($decoded as $id => $row) {
    unset($row[$id]['src']);
}

$json = json_encode($decoded);

---

好吧，假设您的json是正确的（上面没有，因为它周围缺少[]），更正如下

$json = '[{"label":"360","file":"http://aaa","src":"http://aaa"},{"label":"480","file":"http://bbb","src":"http://bbb"},{"label":"720","file":"http://ccc","src":"http://ccc"},{"label":"1080","file":"http://ddd","src":"http://ddd"}]';

$decoded = json_decode($json, true);

foreach($decoded as $id => $row) {
    unset($row[$id]['src']);
}

$json = json_encode($decoded);