isolate all the tagadelic core code into a class and reuse it

Zotlabs/Text/Tagadelic.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Zotlabs\Text;
+
+
+class Tagadelic {
+
+	static public function calc($arr) {
+
+		$tags = array();
+		$min = 1e9;
+		$max = -1e9;
+
+		$x = 0;
+		if(! $arr)
+			return array();
+
+		foreach($arr as $rr) {
+			$tags[$x][0] = $rr['term'];
+			$tags[$x][1] = log($rr['total']);
+			$tags[$x][2] = 0;
+			$min = min($min,$tags[$x][1]);
+			$max = max($max,$tags[$x][1]);
+			$x ++;
+		}
+
+		usort($tags,'self::tags_sort');
+
+		$range = max(.01, $max - $min) * 1.0001;
+
+		for($x = 0; $x < count($tags); $x ++) {
+			$tags[$x][2] = 1 + floor(9 * ($tags[$x][1] - $min) / $range);
+		}
+
+		return $tags;
+	}
+
+	static public function tags_sort($a,$b) {
+		if(strtolower($a[0]) == strtolower($b[0]))
+			return 0;
+		return((strtolower($a[0]) < strtolower($b[0])) ? -1 : 1);
+	}
+
+}