$txt = "\u7cfb\u7edf\u7e41\u5fd9\uff0c\u8bf7\u7a0d\u540e\u91cd\u8bd5";
function u2c($str)
{
return preg_replace_callback(
"#\\\u([0-9a-f]{4})#i",
function ($r) {
return iconv('UCS-2BE', 'UTF-8', pack('H4', $r[1]));
},
$str
);
}
echo u2c($txt);
轉后后顯示中文“系統繁忙，請稍后重試”
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