<?php
	function ikili($var) {
		$coun = count($var);
		if($coun == 1) {
			return;
		}
		$arr = array();
		$series = array();
		for($i=1;$i<$coun;$i++) {
			if($var[$i-1] == $var[$i]) {
				$arr[] = $var[$i-1];
				$arr[] = $var[$i];	
			} else if(isset($arr[1])) {
				$series[] = $arr;
				$arr = array();
			}
		}
		return $series;
	}
?>