Conversion between PHP arrays and Json

In php, array and json conversion are simple. We only need to use json_encode () and json_decode (). It is easy to understand that json_encode () is to convert the PHP array to Json. On the contrary, json_decode () converts Json to a PHP array.

For example:

The Code is as follows:	Copy code
$ Array = array ("name" => "Eric", "age" => 23 );   Echo json_encode ($ array );

The program will print out:

{"Name": "Eric", "age": 23}

Let's look at the following example:

The Code is as follows:	Copy code
$ Array = array (0 => "Eric", 1 => 23 );   Echo json_encode ($ array );

The program will print out:

["Eric", 23]

In this way, json can be converted into an array, and the key remains in the original format.

The Code is as follows:	Copy code
$ Json = '{"name": "zhangsan", "age": 20, "sex": "nan "}'; Print_r (json_decode ($ json, true ));

After json data is parsed, it will become the following Array

Array
(
[Name] => zhangsan
[Age] => 20
[Sex] => nan
)