From c447d3e31b42f2612a7db46ee723b20ad069f38e Mon Sep 17 00:00:00 2001
From: Urban Müller
Date: Mon, 19 Feb 2007 15:19:58 +0000
Subject: added filter_keys

---
 it.class | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/it.class b/it.class
index 1dad9d7..459691e 100644
--- a/it.class
+++ b/it.class
@@ -256,6 +256,22 @@ function replace($replacements, $string, $p = array())
 	return $result;
 }
 
+/**
+ * Extract key => value pairs from assoc array by key
+ * @param $array array to filter
+ * @param $keys array of keys to keep
+ */
+function filter_keys($array, $keys)
+{
+	$result = array();
+	$keep = array_flip($keys);
+
+	foreach ($array as $key => $val)
+		if (isset($keep[$key]))
+			$result[$key] = $val;
+
+	return $result;
 }
 
+}
 ?>
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