/***TranslatesasequenceofUTF-8bytestotheirequivalentunicodecodepoints.*Eachcodepointisprefixedwith"\u".**@paramstring$utf8**@returnstring*/functionutf8_to_unicode($utf8){$i=0;$l=strlen($utf8);$out='';while($i<$l){if((ord($utf8[$i])&0x80)===0x00){//0xxxxxxx$n=ord($utf8[$i++]);}elseif((ord($utf8[$i])&0xE0)===0xC0){//110xxxxx10xxxxxx$n=((ord($utf8[$i++])&0x1F)<<6)|((ord($utf8[$i++])&0x3F)<<0);}elseif((ord($utf8[$i])&0xF0)===0xE0){//1110xxxx10xxxxxx10xxxxxx$n=((ord($utf8[$i++])&0x0F)<<12)|((ord($utf8[$i++])&0x3F)<<6)|((ord($utf8[$i++])&0x3F)<<0);}elseif((ord($utf8[$i])&0xF8)===0xF0){//11110xxx10xxxxxx10xxxxxx10xxxxxx$n=((ord($utf8[$i++])&0x07)<<18)|((ord($utf8[$i++])&0x3F)<<12)|((ord($utf8[$i++])&0x3F)<<6)|((ord($utf8[$i++])&0x3F)<<0);}elseif((ord($utf8[$i])&0xFC)===0xF8){//111110xx10xxxxxx10xxxxxx10xxxxxx10xxxxxx$n=((ord($utf8[$i++])&0x03)<<24)|((ord($utf8[$i++])&0x3F)<<18)|((ord($utf8[$i++])&0x3F)<<12)|((ord($utf8[$i++])&0x3F)<<6)|((ord($utf8[$i++])&0x3F)<<0);}elseif((ord($utf8[$i])&0xFE)===0xFC){//1111110x10xxxxxx10xxxxxx10xxxxxx10xxxxxx10xxxxxx$n=((ord($utf8[$i++])&0x01)<<30)|((ord($utf8[$i++])&0x3F)<<24)|((ord($utf8[$i++])&0x3F)<<18)|((ord($utf8[$i++])&0x3F)<<12)|((ord($utf8[$i++])&0x3F)<<6)|((ord($utf8[$i++])&0x3F)<<0);}else{thrownew\Exception('Invalidutf-8codepoint');}$n=strtoupper(dechex($n));$pad=strlen($n)<=4?strlen($n)+strlen($n)%2:0;$n=str_pad($n,$pad,"0",STR_PAD_LEFT);$out.=sprintf("\u%s",$n);}return$out;}