new pisilinux web sites

Internal/package-comparison/ElapsedTime.php

@@ -0,0 +1,39 @@
+<?php namespace ZN\Comparison;
+/**
+ * ZN PHP Web Framework
+ * 
+ * "Simplicity is the ultimate sophistication." ~ Da Vinci
+ * 
+ * @package ZN
+ * @license MIT [http://opensource.org/licenses/MIT]
+ * @author  Ozan UYKUN [ozan@znframework.com]
+ */
+
+class ElapsedTime
+{
+    /**
+     * Calculate elapsed time
+     * 
+     * @param string $result
+     * @param int    $decimal = 4
+     * 
+     * @return float
+     */
+    public static function calculate(string $result, int $decimal = 4) : Float
+    {
+        $resend  = $result."_end";
+        $restart = $result."_start";
+
+        if( ! isset(Properties::$tests[$restart]) )
+        {
+            throw new Exception\InvalidParameterException(NULL, ['&' => 'elapsedTime', '%' => $result, 'start']);
+        }
+
+        if( ! isset(Properties::$tests[$resend]) )
+        {
+            throw new Exception\InvalidParameterException(NULL, ['&' => 'elapsedTime', '%' => $result, 'end']);
+        }
+
+        return round(((float) Properties::$tests[$resend] - (float) Properties::$tests[$restart]), $decimal);
+    }
+}