An explanation of the conversion between PHP arrays and JSON _php tutorial

In PHP, arrays and JSON transformations are simple, as long as we use Json_encode () and Json_decode (). It is easy to understand that Json_encode () is the conversion of PHP arrays into JSON. Instead, Json_decode () converts the JSON into a PHP array.

For example:

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$array = Array ("name" = "Eric", "age" = 23); echo Json_encode ($array);

The program will print out:

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

Let's look at the following example:

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$array = Array (0 = "Eric", 1 = 23); echo Json_encode ($array);

The program will print out:

["Eric", 23]

This allows you to convert the JSON into an array form, and the key remains in its original format

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$json = ' {' name ': ' Zhangsan ', ' age ': ', ' sex ': ' nan '} '; Print_r (Json_decode ($json, true));

This JSON data is parsed and becomes an array like this

Array
(
[Name] = Zhangsan
[Age] = 20
[Sex] = Nan
)

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