Solve the problem of php json_encode Chinese transcoding and garbled characters

Example, php json_encode Chinese transcoding and garbled code problems.

// Prevent json Chinese transcoding
function jsonEncodeWithCN($data) {
 return preg_replace("/\u([0-9a-f]{4} )/ie", "iconv('UCS-2BE', 'UTF-8', pack('H4', '$1'))", json_encode($data));
}
< p>$arr = array('a'=>'test', b=>'hello');
echo jsonEncodeWithCN($arr);