Json has been an efficient way to handle information and message exchanges in web programming. For example, I usually use PHP to connect MySQL and retrieve information, then display as Json. So a webpage can “AJAX” the displayed Json to create a dynamic view on itself. However, while the information involves unicode characters, PHP turn them into unreadable codes. After google, I found the following is the best way to solve the problem.
$string = '你好嗎';
echo json_encode($string); //Output "u4f60u597du55ce"
echo preg_replace("#\u([0-9a-f]+)#ie", "iconv('UCS-2', 'UTF-8', pack('H4', '\1'))", json_encode($string)); // Output "你好嗎"
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