Fixes #3064 Added a function for human readable sizes used in FAI

include/functions.inc

@@ -2252,6 +2252,36 @@ function to_byte($value) {
   }
 }
 
+/*!
+ * \brief Convert a size in bytes to a human readable version
+ *
+ * \param float $bytes size in bytes
+ *
+ * \param int $precision number of digits after comma, default is 2
+ *
+ * \return Returns something like '9.77KiB' for arguments (10000, 2)
+ */
+function humanReadableSize ($bytes, $precision = 2)
+{
+  $format = array(
+    _('%sB'),
+    _('%sKiB'),
+    _('%sMiB'),
+    _('%sGiB'),
+    _('%sTiB'),
+    _('%sPiB'),
+    _('%sEiB'),
+    _('%sZiB'),
+    _('%sYiB')
+  );
+  if ($bytes == 0) {
+    return sprintf($format[0], '0');
+  }
+  $base = log($bytes) / log(1024);
+
+  return sprintf($format[floor($base)], round(pow(1024, $base - floor($base)), $precision));
+}
+
 
 /*!
  * \brief Check if a value exists in an array (case-insensitive)