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<?php function replace_unicode_escape_sequence($match) { return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE'); } function unicode_decode($str) { return preg_replace_callback('/\\\\u([0-9a-f]{4})/i', 'replace_unicode_escape_sequence', $str); } $str = unicode_decode('\u52a0\u62ff\u5927'); echo $str;
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