Returning JSON from PHP to JavaScript?

Php has an inbuilt JSON Serialising function.

json_encode

json_encode

Please use that if you can and don't suffer Not Invented Here syndrome.

Here are a couple of things missing in the previous answers:

Set header in your PHP:

header('Content-type: application/json');
echo json_encode($array);

json_encode() can return a JavaScript array instead of JavaScript object, see:
Returning JSON from a PHP Script
This could be important to know in some cases as arrays and objects are not the same.

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