How to convert List data to JSON array in PHP

In PHP, converting a List to a JSON array is relatively simple. In this article, we will explore how to generate a JSON array from PHP’s List data structure.

First, we need to define a List in PHP. We can use PHP arrays instead of Lists in Java. The following is the form of an example array:

$list = array(
    array("id" => 1, "name" => "John"),
    array("id" => 2, "name" => "Mary"),
    array("id" => 3, "name" => "Tom"),
);

Next, we need to convert the list into a json array using PHP's built-in json_encode() function. The following is an example of the converted code:

$json = json_encode($list);

This will generate a json string similar to the following:

[
    {"id":1,"name":"John"},
    {"id":2,"name":"Mary"},
    {"id":3,"name":"Tom"}
]

In the above example, we created a JSON array containing three elements. Each element is an object containing id and name keys.

If we want to convert the List into a more complex JSON array, we can add more key-value pairs. Here is an example where we change each element to an object containing four keys:

$list = array(
    array("id" => 1, "name" => "John", "age" => 25, "gender" => "male"),
    array("id" => 2, "name" => "Mary", "age" => 30, "gender" => "female"),
    array("id" => 3, "name" => "Tom", "age" => 20, "gender" => "male"),
);

$json = json_encode($list);

This will produce a JSON array similar to the following:

[
    {"id":1,"name":"John","age":25,"gender":"male"},
    {"id":2,"name":"Mary","age":30,"gender":"female"},
    {"id":3,"name":"Tom","age":20,"gender":"male"}
]

By using PHP's json_encode function, we can easily convert List to JSON array. Whether we want to convert a simple list or a complex object to JSON, PHP provides us with a simple and effective way.

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