<?php class utils { public static function replace_unicode_escape_sequence($match) { return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE'); } } $str = '{"name":"F\u00f6retag: Betalning"}'; echo preg_replace_callback('/\\\\u([0-9a-f]{4})/i', 'utils.replace_unicode_escape_sequence', $str);
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