--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/goodreads/UTFUtil.php	Thu Feb 16 22:29:02 2017 +0000
@@ -0,0 +1,24 @@
+<?PHP
+function convert_utf8($str){
+    if(!seems_utf8($str))
+        return mb_convert_encoding($str, 'UTF-8');
+    return $str;
+}
+
+function seems_utf8($Str) {
+ for ($i=0; $i<strlen($Str); $i++) {
+  if (ord($Str[$i]) < 0x80) continue; # 0bbbbbbb
+  elseif ((ord($Str[$i]) & 0xE0) == 0xC0) $n=1; # 110bbbbb
+  elseif ((ord($Str[$i]) & 0xF0) == 0xE0) $n=2; # 1110bbbb
+  elseif ((ord($Str[$i]) & 0xF8) == 0xF0) $n=3; # 11110bbb
+  elseif ((ord($Str[$i]) & 0xFC) == 0xF8) $n=4; # 111110bb
+  elseif ((ord($Str[$i]) & 0xFE) == 0xFC) $n=5; # 1111110b
+  else return false; # Does not match any model
+  for ($j=0; $j<$n; $j++) { # n bytes matching 10bbbbbb follow ?
+   if ((++$i == strlen($Str)) || ((ord($Str[$i]) & 0xC0) != 0x80))
+   return false;
+  }
+ }
+ return true;
+}
+?>
\ No newline at end of file