อยากทราบวิธี POST ค่าที่เป็น Array จากอีกหน้านึงมาครับเช่น y[i] ครับ Server

$_POST["y[i]"];

<?php
	$count=0;
	//$count2=0;
	$i=0;
	
	include "Conection.php";
	$sql="select * from assessment_quality where topic_quality_set='$select1'  ";
	$result=mysql_query($sql);
	while($record=mysql_fetch_array($result)) {
	$id=$record["topic_quality_id"];
		$count++;
		//$count2++;
		
		//$j=$x[$id];
		echo "<tr>
		<td align=center>$count</td>
		<td>&nbsp;$record[topic_quality_text]<input name='y[$i]' type='hidden' value='$record[topic_quality_text]'></td>
		<td align=center><INPUT TYPE='radio' NAME='x[$i]' VALUE='100' style='width:50px; height:50px;'></td>
		<td align=center><INPUT TYPE='radio' NAME='x[$i]' VALUE='75' style='width:50px; height:50px;'></td>
		<td align=center><INPUT TYPE='radio' NAME='x[$i]' VALUE='50' style='width:50px; height:50px;'></td>
		<td align=center><INPUT TYPE='radio' NAME='x[$i]' VALUE='25' style='width:50px; height:50px;'></td>
		<td align=center><INPUT TYPE='radio' NAME='x[$i]' VALUE='0'  style='width:50px; height:50px;'></td>
		</tr>
		";

	
	 
	
	//echo"$record[topic_quality_id]";
		
	$i++;	
	}  
	//mysql_close();
	
?>    


<?php
	$i2=0;
	$count2=0;
	include "Conection.php";
	$sql2="select * from assessment_send where topic_send_set='$select2' ";
	$result2=mysql_query($sql2);
	
	while($record=mysql_fetch_array($result2)) {
	
		echo "<tr>
		<td align=center>$count</td>
		<td>&nbsp;$record[topic_send_text]<input name='y2[$i2]' type='hidden' value='$record[topic_send_text]'></td>
		<td align=center><INPUT TYPE='radio' NAME='x2[$i2]' VALUE='100' style='width:50px; height:50px;'></td>
		<td align=center><INPUT TYPE='radio' NAME='x2[$i2]' VALUE='75' style='width:50px; height:50px;'></td>
		<td align=center><INPUT TYPE='radio' NAME='x2[$i2]' VALUE='50' style='width:50px; height:50px;'></td>
		<td align=center><INPUT TYPE='radio' NAME='x2[$i2]' VALUE='25' style='width:50px; height:50px;'></td>
		<td align=center><INPUT TYPE='radio' NAME='x2[$i2]' VALUE='0' style='width:50px; height:50px;'></td>
		</tr>
		";

	
	$count++;	
	$count2++; $i2++;
	}$count-=1;
	//mysql_close();
	
?>                                                              

<?
$count=0;
$score1=0;
include "Conection.php";
ใส่ $_POST["y[i]"]; แล้ว Error เลยครับ แต่ใน Localhost ไม่ต้องใส่เลยครับ มันอ่านค่าเจอให้เลยโดยไม่ต้อง POST
for($i=0;$i<$textfield;$i++){
$sql="insert into assessment_save value(NULL,'$y[$i]',$x[$i],'quality','$hiddenx1',NULL,'$hiddenField','$hiddenField2')";

$score1+=$x[$i];
$result=mysql_query($sql);

}
$score2=$score1;
for($i2=0;$i2<$textfield2;$i2++){
$sql2="insert into assessment_save value(NULL,'$y2[$i2]',$x2[$i2],'send','$hiddenx2',NULL,'$hiddenField','$hiddenField2')";

$score2+=$x2[$i2];
$result2=mysql_query($sql2);

}
//echo" คะแนนรวมได้ $score2 คะแนน"; 
$a=100*$all;
$score_final=($score2*100)/$a; 
$score_final2=number_format($score_final,2);

//echo"$score2 X 100 หาร $a <br>";
//echo"คิดเป็น % ได้ $score_final2 %";

$today_date_time=date("Y-m-d G:i:s");
$today_date=date("Y-m-d");

$sql3="insert into assessment_score value(NULL,'$score_final2','$hiddenField','$hiddenField2','$today_date_time','$today_date')";
$result3=mysql_query($sql3);

$sqlx="update assessment_save set time_save='$today_date' where announce_number ='$hiddenField' ";
$resultx=mysql_query($sqlx);


?>