Introduction to JSON data operations in PHP and phpjson data

Introduction to JSON data operations in PHP and phpjson data

JSON, the full name is JavaScript Object Notation. It is a lightweight data exchange format based on the JavaScript programming language ECMA-262 3rd Edition-December 1999 standard, mainly used to exchange data with the server. Similar to XML, it is an independent language and has great advantages in cross-platform data transmission.

Create a json. php file and perform the encode operation first:

// Encode // generate JSON format data $ arr = array (1, 2, 3, 4, 5, 6, 7, 8, 9, 'Hello', 'php'); echo json_encode ($ arr ); // json_encode: converts an object to json format data.

The result is [1, 2, 3, 4, 5, 6, 7, 8, 9, "Hello", "PHP"].

Then perform the decode operation:

// Decode decoding $ jsonStr = '{"h": "Hello", "w": "World", "0": [3, 2, 1]}'; $ obj = json_decode ($ jsonStr); echo $ obj-> h; // you can obtain the result by using the member access method.

After knowing how to use it, you can try to capture API data, such as the weather...

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