Retrieving Nested array in php using _POST - php

Question

I have set the below in my HTML form. How do I retrieve it back in my PHP page(ON Submit)?
foreach ($rows as $i => $value) {
echo "<br/>What do you think about : ";
echo "<li>$value<br/>";
echo "1<input type='radio' value='1' name='answer-$i' /> ";
echo "2<input type='radio' value='2' name='answer-$i' /> ";
echo "3<input type='radio' value='3' name='answer-$i' /> ";
echo "4<input type='radio' value='4' name='answer-$i' /> ";
echo "5<input type='radio' value='5' name='answer-$i' /> ";
}
?>
How do I retrieve my answer back ?
I use POST method for my form. Help me!!
Adding Details.
<?php
echo "hello";
$answer = _POST("answer");
echo $answer-0;
echo $answer[0];
foreach ($answer as $i => $value) {
echo $value;
echo $i;
}
?>
answer-0=3&answer-1=1
Above Values shows that The parameters are set(Get Method). But In POST METHOD I am not able to access them.
Can Someone help me? I still havent resolved the issue.

Answer 1

<form method="post">
<?php
foreach ($_POST as $i => $value) {
echo "$i $value<br/>";
}
echo $_POST['answer-1'];
echo "<br>";
echo $_POST['answer-2'];
$rows = array(
"1" => "bar",
"2" => "foo",
);
foreach ($rows as $i => $value) {
echo "<br/>What do you think about : ";
echo "<li>$value<br/>";
echo "1<input type='radio' value='1' name='answer-$i' /> ";
echo "2<input type='radio' value='2' name='answer-$i' /> ";
echo "3<input type='radio' value='3' name='answer-$i' /> ";
echo "4<input type='radio' value='4' name='answer-$i' /> ";
echo "5<input type='radio' value='5' name='answer-$i' /> ";
}
?>
<input type="submit"/>
</form>
Looks more like, what you need.

Answer 2

So you need to use $_POST array with square brackets (it's an array). This code will build an array of $answers for you, assuming you still have $rows available.
$answers = array();
foreach ($rows as $i => $value) {
$answers[$i] = $_POST["answer-$i"];
}
print_r($answers);