Loop in form with foreach and session - php

Question

I have a form with a loop inside.
Here is my code:
<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="post">
<?php
for ($i = 1; $i <= 2; $i++) {
echo "Numero ";
echo $i;
echo "<input type='text' name='number2[$i]' id='number2{$i}' />";
}
?>
<input type="submit" name="submitbutton" value="Confirm!">
</form>
<?php
print_r( $_POST );
if(!isset($submitbutton)) {
if (isset($_POST['number2']) != "") {
echo "<b>{$_POST['number2']}</b>, !\n";
$nI = $_POST['number2'];
}
}
?>
The output I get is:
Array ( [number2] => Array ( [1] => 3 [2] => 4 ) [submitbutton] => Confirm! ) Array, !
I would like to know how can I put the number in a session.
For example Session[1]=3, Session[2]=4
I try with array and foreach but I always get error.

Answer 1

Something like this should work for you:
<?php
// Start a PHP Session
session_start();
?>
<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="post">
<?php
for ($i = 1; $i <= 2; $i++) {
echo "Numero ";
echo $i;
echo "<input type='text' name='number2[$i]' id='number2{$i}' />";
}
?>
<input type="submit" name="submitbutton" value="Confirm!">
</form>
<?php
// If the form was submitted and number2 is an array
if(isset($_POST['submitbutton'])
&& isset($_POST['number2'])
&& is_array($_POST['number2'])) {
// Loop through each posted value and save it to the session
foreach ($_POST['number2'] as $key => $value) {
$_SESSION["number2_{$key}"] = $value;
}
}
echo "number2_1 = " . $_SESSION["number2_1"] . "<br />";
echo "number2_2 = " . $_SESSION["number2_2"] . "<br />";
?>

Answer 2

What error are you getting? Note that isset() merely returns TRUE or FALSE, so isset($_POST['number2']) will never equal the empty string.