1 files changed, 27 insertions, 0 deletions
diff --git a/includes/inc_utils.php b/includes/inc_utils.php
new file mode 100644
index 0000000..a984794
--- /dev/null
+++ b/includes/inc_utils.php
@@ -0,0 +1,27 @@
+<?php
+function is_utf8($str) {
+    $c=0; $b=0;
+    $bits=0;
+    $len=strlen($str);
+    for($i=0; $i<$len; $i++){
+        $c=ord($str[$i]);
+        if($c > 128){
+            if(($c >= 254)) return false;
+            elseif($c >= 252) $bits=6;
+            elseif($c >= 248) $bits=5;
+            elseif($c >= 240) $bits=4;
+            elseif($c >= 224) $bits=3;
+            elseif($c >= 192) $bits=2;
+            else return false;
+            if(($i+$bits) > $len) return false;
+            while($bits > 1){
+                $i++;
+                $b=ord($str[$i]);
+                if($b < 128 || $b > 191) return false;
+                $bits--;
+            }
+        }
+    }
+    return true;
+}
+?>