new function

diff --git a/single-functions/formating-bytes.php b/single-functions/formating-bytes.php
new file mode 100644 (file)
index 0000000..3ada150
--- /dev/null
+++ b/single-functions/formating-bytes.php
@@ -0,0 +1,45 @@
+<?php
+/**
+ *  dolphin. Collection of useful PHP skeletons.
+ *  Copyright (C) 2012  Johannes 'Banana' Keßler
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
+ *
+ * You should have received a copy of the
+ * COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
+ * along with this program.  If not, see http://www.sun.com/cddl/cddl.html
+ */
+
+/**
+ * convert given bytes into human readable string
+ * @author banana mail@bananas-playground.net
+ * @author the_gil http://www.reddit.com/user/the_gil
+ *
+ * @param int $amount Bytes
+ * @param string $unit
+ * @param int $decimals
+ * @param int $powerMax
+ * @param boolean $binary
+ * @param int $powerBase
+ * @return string Human readable format
+ */
+function unit($amount, $unit, $decimals = 2, $powerMax = 100, $binary = true, $powerBase = 0) {
+    if ($binary) {
+        $powerBase = $powerBase == 0 ? 1024 : $powerBase;
+        $prefixes = array('','Ki','Mi','Gi','Ti','Pi','Ei','Zi','Yi');
+    } else {
+        $powerBase = $powerBase == 0 ? 1000 : $powerBase;
+        $prefixes = array('','K','M','G','T','P','E','Z','Y');
+    }
+
+    $power = 0;
+    while($amount > $powerBase && $power < $powerMax) {
+        $power++;
+        $amount /= $powerBase;
+    }
+
+    return round($amount, $decimals) . ' ' . $prefixes[$power] . $unit;
+}
+
+?>
\ No newline at end of file