ตัดค่าที่สลับตำแหน่งแล้วเหมือนกันออกจาก Array ทำยังงไงดีครับ

<?php
function number_reverse($num){
	$flag10 = intval($num/10);
	$flag1 = $num - ($flag10*10);
	return ($flag1*10)+$flag10;
}
$arr_num = array(8,2,8,9,8,2,8); //ตัวอย่างค่าที่รับมา

$count_arr = count($arr_num);
for ($i = 0; $i <= $count_arr-2; $i++ ){
	$arr_new[$i] = $arr_num[$i].$arr_num[$i+1]; //จับคู่ หลัก1หลัก2,หลัก2หลัก3,...,หลักnหลักn+1
}
// จะได้ 82,28,89,98,82,28
// ตัดค่าซ้ำ
$r=0; 
$arr = array();	
$b= array_unique ($arr_new);
foreach($b as $value){
	$arr[$r] = $value;
	$r++;
}
// เหลือ 82,28,89,98
$count = count($arr);

for ($i = 0; $i < $count; $i++ ){
	$isOK = TRUE;
	//echo $i;
	if($i>0){                      
		for($k = 0; $k < $i; $k++){ 
			//echo $k,' ';
			if($arr[$i] == number_reverse($arr[$k])){ 
				$isOK = FALSE; 
				break; 
			} 
		}
	//echo '<br>';
	}
	echo $isOK?($arr[$i]."<br />"):'';
}
?>

SELECT * FROM `table` WHERE number='".$number."'

<?php
function number_reverse($num){
	$flag10 = intval($num/10);
	$flag1 = $num - ($flag10*10);
	return ($flag1*10)+$flag10;
}

$arr_num = array(8,2,8,9,8,2,8);

$count_arr = count($arr_num);
for ($i = 0; $i <= $count_arr-2; $i++ ){
	$arr_new[$i] = $arr_num[$i].$arr_num[$i+1];
}

$r=0; 
$arr = array();	
$b= array_unique ($arr_new);
foreach($b as $value){
	$arr[$r] = $value;
	$r++;
}

$count = count($arr);

for ($i = 0; $i < $count; $i++ ){
	$isok = TRUE;

	if($i>0){                      
		for($k = 0; $k < $i; $k++){ 

			if($arr[$i] == number_reverse($arr[$k])){ 
				$isok = FALSE; 
				break; 
			} 
		}

	}
	$new_number[$i] = $isok?($arr[$i]):'';
	
	if($new_number[$i]==''){
		unset($new_number[$i]);
	}

}
	$num=0; 
	$arr_num = array();	
	$b_num= array_unique ($new_number);
	foreach($b_num as $value_num){
		$arr_num[$num] = $value_num;
		$num++;
	}
print_r($arr_num);
?>

<?php
	$arr_num = array(8,2,8,9,8,2,8);
	$count_arr = count($arr_num);
	$data = array();
	for ($i = 0; $i <= $count_arr-2; $i++ ){
		$data[$i] = $arr_num[$i].$arr_num[$i+1];
	}
	
	$unique = array_unique($data); // เหลือ 82,28,89,98
	$count = count($unique);
	$newArray = array();
	for($i = 0; $i < $count; $i++ ){
		if(!isset($unique[$i])) continue;
		$strNum = (string)$unique[$i];
		$rev = (int)strrev($strNum);
		if($k = array_search($rev, $unique)){
			unset($unique[$k]);
		}
	}
	var_dump($unique);
?>