How to decode Unicode escape sequences like “\u00ed” to proper UTF-8 encoded characters?
问题 Is there a function in PHP that can decode Unicode escape sequences like \" \\u00ed \" to \" í \" and all other similar occurrences? I found similar question here but is doesn\'t seem to work. 回答1: Try this: $str = preg_replace_callback('/\\\\u([0-9a-fA-F]{4})/', function ($match) { return mb_convert_encoding(pack('H*', $match[1]), 'UTF-8', 'UCS-2BE'); }, $str); In case it's UTF-16 based C/C++/Java/Json-style: $str = preg_replace_callback('/\\\\u([0-9a-fA-F]{4})/', function ($match) { return