From c123a6e5546b0cd0b8ed7f6b580ec6a03fecae81 Mon Sep 17 00:00:00 2001
From: ben <ben@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Thu, 1 May 2008 13:44:38 +0000
Subject: Introducing run_function_once($functionname, $timelastupdatedcheck).

git-svn-id: https://code.elgg.org/elgg/trunk@592 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/elgglib.php | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index 10a2ebb25..999bffce5 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -859,4 +859,29 @@
 			
 		}
 
+	/**
+	 * Runs a function once - not per page load, but per installation.
+	 * If you like, you can also set the threshold for the function execution - i.e.,
+	 * if the function was executed before or on $timelastupdatedcheck, this
+	 * function will run it again.
+	 *
+	 * @param string $functionname The name of the function you want to run.
+	 * @param int $timelastupdatedcheck Optionally, the UNIX epoch timestamp of the execution threshold
+	 * @return true|false Depending on success.
+	 */
+		function run_function_once($functionname, $timelastupdatedcheck = 0) {
+			if ($lastupdated = datalist_get($name)) {
+				$lastupdated = (int) $lastupdated;
+			} else {
+				$lastupdated = 0;
+			}
+			if (is_callable($functionname) && $lastupdated <= $timelastupdatedcheck) {
+				$functionname();
+				datalist_set($functionname,time());
+				return true;
+			} else {
+				return false;
+			}
+		}
+		
 ?>
\ No newline at end of file
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