1 files changed, 40 insertions, 0 deletions
diff --git a/functions.common.inc.php b/functions.common.inc.php
new file mode 100644
index 0000000..5be37b6
--- /dev/null
+++ b/functions.common.inc.php
@@ -0,0 +1,40 @@
+<?php
+/*
+ * This file contains functions commonly used.
+ */
+
+/**
+ * Copied from http://rogerstringer.com/2013/11/15/generate-uuids-php/
+ */ 
+function generate_uuid() {
+  return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
+    mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ),
+    mt_rand( 0, 0xffff ),
+    mt_rand( 0, 0x0fff ) | 0x4000,
+    mt_rand( 0, 0x3fff ) | 0x8000,
+    mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff )
+  );
+}
+
+function format_size($size, $precision = 2) {
+  $sizes = ['bytes', 'Kb', 'Mb', 'Gb', 'Tb'];
+  $i = 0;
+  while (1023 < $size && $i < count($sizes) - 1) {
+    $size /= 1023;
+    ++$i;
+  }
+
+  return number_format($size, $precision).' '.$sizes[$i];
+}
+
+function startsWith($haystack, $needle) {
+     $length = strlen($needle);
+     return (substr($haystack, 0, $length) === $needle);
+}
+
+function endsWith($haystack, $needle) {
+    $length = strlen($needle);
+
+    return $length === 0 || (substr($haystack, -$length) === $needle);
+}
+?>