Question

如何解析php中的json后面

[
 { "user":"John", "age":22, "country":"United States" },
 { "user":"Will", "age":27, "country":"United Kingdom" },
 { "user":"Abiel", "age":19, "country":"Mexico" },
 { "user":"Rick", "age":34, "country":"Panama" },
 { "user":"Susan", "age":23, "country":"Germany" },
 { "user":"Amy", "age":43, "country":"France" }
]

我使用以下代码但它没有用

$jsonData = file_get_contents("http://localhost/attendance1/a.json");
$phpArray = json_decode($jsonData, true);
echo $phpArray;
foreach ($phpArray as $key => $value) {
    echo "<h2>$key</h2>";
    foreach ($value as $k => $v) {
        echo "$k | $v <br />";
    }
}

Answer 1

你必须使用[]代替{}来改变你的json主项目（而不是对象）。

[
 { "user":"John", "age":22, "country":"United States" },
 { "user":"Will", "age":27, "country":"United Kingdom" },
 { "user":"Abiel", "age":19, "country":"Mexico" },
 { "user":"Rick", "age":34, "country":"Panama" },
 { "user":"Susan", "age":23, "country":"Germany" },
 { "user":"Amy", "age":43, "country":"France" }
]

Answer 2

它不是有效的JSON格式，试试这个：

[
 { "user":"John", "age":22, "country":"United States" },
 { "user":"Will", "age":27, "country":"United Kingdom" },
 { "user":"Abiel", "age":19, "country":"Mexico" },
 { "user":"Rick", "age":34, "country":"Panama" },
 { "user":"Susan", "age":23, "country":"Germany" },
 { "user":"Amy", "age":43, "country":"France" }
]

（看方括号）

“[]”括号表示LIST，而“{}”表示对象。它们之间的区别在于对象包含“key”：“value”对，而list返回没有键的项

Answer 3

[
 { "user":"John", "age":22, "country":"United States" },
 { "user":"Will", "age":27, "country":"United Kingdom" },
 { "user":"Abiel", "age":19, "country":"Mexico" },
 { "user":"Rick", "age":34, "country":"Panama" },
 { "user":"Susan", "age":23, "country":"Germany" },
 { "user":"Amy", "age":43, "country":"France" }
]

格式如下数组

$array = [3,5,7,4]

打印像

Array ( [0] => 3 [1] => 5 [2] => 7 [3] => 4 )

和访问$array{index}的元素以相同的方式使用循环，您应该访问元素，然后您可以使用函数json_decode。

$object = json_decode($element_of_array)

使用该对象返回一个对象，您可以从json元素访问数据。

$object->user
$object->age

希望这会对你有所帮助，祝你好运！

如何解析php中的json

3 个答案: