PHP json encoding method without escaping Chinese characters_PHP tutorial

Although the latest PHP 5.4 already supports JSON Chinese encoding, that is, through the JSON_UNESCAPED_UNICODE parameter, for example:

json_encode("Chinese", JSON_UNESCAPED_UNICODE) For earlier PHP versions, it handles json encoding without escaping Chinese characters. I have written an article about PHP outputting Chinese JSON strings before. Here is a more perfect method:

　/**

* JSON encoding method without escaping Chinese characters

* @param array $arr Array to be encoded

* @return string

*/

Function encode ($arr) {

$str = json_encode($arr);

　$search = "#\u([0-9a-f]+)#ie";

　$replace = "iconv('UCS-2', 'UTF-8', pack('H4', '\1'))";

return preg_replace($search, $replace, $str);

　}

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