function replace_unicode_escape_sequence($match) {
return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE');
}
$name = 'u65b0u6d6au5faeu535a';
$str = preg_replace_callback('//u([0-9a-f]{4})/i', 'replace_unicode_escape_sequence', $name);
echo $str; //輸出： 新浪微博
 

 

//咱將上述方案A給封裝起來~~~(方案A穩定版+升級+推薦)
class Helper_Tool
{
static function unicodeDecode($data)
{
function replace_unicode_escape_sequence($match) {
return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE');
}

$rs = preg_replace_callback('//u([0-9a-f]{4})/i', 'replace_unicode_escape_sequence', $data);

return $rs;
}
}
//調用
$name = 'u65b0u6d6au5faeu535a';
$data = Helper_Tool::unicodeDecode($name); //輸出新浪微博

<?php
function unicodeDecode($name){
$json = '{"str":"'.$name.'"}';
$arr = json_decode($json,true);
if(empty($arr)) return '';
return $arr['str'];
}
$name = 'u65b0u6d6au5faeu535a';
echo unicodeDecode($name); //輸出： 新浪微博