How does PHP return data in json format?

Some websites usually return JSON-format data when using ajax:

Php output JSON format

Obviously not what you want. Or a string. How do I implement it? In fact, it is very easy to add the following code to the PHP file header:

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Header ('content-type: text/json ');

Sample code:

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<? Php Header ('content-type: text/json '); $ Fruits = array ( "Fruits" => array ("a" => "orange", "B" => "banana", "c" => "apple "), "Numbers" => array (1, 2, 3, 4, 5, 6 ), "Holes" => array ("first", 5 => "second", "third ") ); Echo json_encode ($ fruits ); ?>

Let's take a look at jquery.

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$ (Function (){ $ ('# Send'). click (function (){ $. GetJSON ('http: // blog.meituo.net/wp-content/uploads/php_return_json/test.js', function (data ){ $ ('# ResText'). empty (); Var html = ''; $. Each (data, function (commentIndex, comment ){ Html + = '<div class = "comment"> }) ('{Restext'{.html (html ); }) }) })

What you need to do is to store the data in a. json or. js file in the correct format. The following is an example of the data transmitted in json format.

 

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[   { "Username": "Zhang San ", "Content": "sofa ." },   { "Username": "Li Si ", "Content": "bench ." },   { "Username": "Wang Wu ", "Content": "floor ."   } ]