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<?php class utils { private static function replace_unicode_escape_sequence($match) { return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE'); } public static function to_decode($str) { return preg_replace_callback('/\\\\u([0-9a-f]{4})/i', '$this::replace_unicode_escape_sequence', $str); } } $str = '{"name":"F\u00f6retag: Betalning"}'; echo utils::to_decode($str);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: preg_replace_callback(): Argument #2 ($callback) must be a valid callback, class "$this" not found in /in/MFIGa:9 Stack trace: #0 /in/MFIGa(9): preg_replace_callback('/\\\\u([0-9a-f]{4...', '$this::replace_...', '{"name":"F\\u00f...') #1 /in/MFIGa(14): utils::to_decode('{"name":"F\\u00f...') #2 {main} thrown in /in/MFIGa on line 9
Process exited with code 255.

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