How to get a form input array into a PHP array

I have a form like the one below which is posted to contacts.php, and the user can dynamically add more with jQuery.

<input type="text" name="name[]" />
<input type="text" name="email[]" />

<input type="text" name="name[]" />
<input type="text" name="email[]" />

<input type="text" name="name[]" />
<input type="text" name="email[]" />

If I echo them out in PHP with the code below,

$name = $_POST['name'];
$email = $_POST['account'];

foreach($name as $v) {
    print $v;
}

foreach($email as $v) {
    print $v;
}

I will get something like this:

> name1name2name3email1email2email3

How can I get those arrays into something like the code below?

function show_Names($n, $m)
{
    return("The name is $n and email is $m, thank you");
}

$a = array("name1", "name2", "name3");
$b = array("email1", "email2", "email3");

$c = array_map("show_Names", $a, $b);
print_r($c);

so my output is like this:

> The name is name1 and email is email1, thank you >The name is name2 and email is email2, thank you >The name is name3 and email is email3, thank you

They are already in arrays: $name is an array, as is $email

So all you need to do is add a bit of processing to attack both arrays:

$name = $_POST['name'];
$email = $_POST['account'];

foreach( $name as $key => $n ) {
  print "The name is " . $n . " and email is " . $email[$key] . ", thank you\n";
}

To handle more inputs, just extend the pattern:

$name = $_POST['name'];
$email = $_POST['account'];
$location = $_POST['location'];

foreach( $name as $key => $n ) {
  print "The name is " . $n . ", email is " . $email[$key] .
        ", and location is " . $location[$key] . ". Thank you\n";
}

E.g. by naming the fields like

<input type="text" name="item[0][name]" />
<input type="text" name="item[0][email]" />

<input type="text" name="item[1][name]" />
<input type="text" name="item[1][email]" />

<input type="text" name="item[2][name]" />
<input type="text" name="item[2][email]" />

(which is also possible when adding elements via JavaScript)

The corresponding PHP script might look like

function show_Names($e)
{
  return "The name is $e[name] and email is $e[email], thank you";
}

$c = array_map("show_Names", $_POST['item']);
print_r($c);

You could do something such as this:

function AddToArray ($post_information) {
    //Create the return array
    $return = array();
    //Iterate through the array passed
    foreach ($post_information as $key => $value) {
        //Append the key and value to the array, e.g.
            //$_POST['keys'] = "values" would be in the array as "keys"=>"values"
        $return[$key] = $value;
    }
    //Return the created array
    return $return;
}

The test with:

if (isset($_POST['submit'])) {
    var_dump(AddToArray($_POST));
}

This for me produced:

array (size=1)
  0 =>
    array (size=5)
      'stake' => string '0' (length=1)
      'odds' => string '' (length=0)
      'ew' => string 'false' (length=5)
      'ew_deduction' => string '' (length=0)
      'submit' => string 'Open' (length=4)

You can use an array of fieldsets:

<fieldset>
    <input type="text" name="item[1]" />
    <input type="text" name="item[2]" />
    <input type="hidden" name="fset[]"/>
</fieldset>

<fieldset>
    <input type="text" name="item[3]" />
    <input type="text" name="item[4]" />
    <input type="hidden" name="fset[]"/>
</fieldset>

I added a hidden field to count the number of the fieldsets. The user can add or delete the fields and then save it.

I came across this problem as well. Given 3 inputs: field[], field2[], field3[]

You can access each of these fields dynamically. Since each field will be an array, the related fields will all share the same array key. For example, given input data:

• Bob, [email protected], male
• Mark, [email protected], male

Bob and his email and sex will share the same key. With this in mind, you can access the data in a for loop like this:

    for($x = 0; $x < count($first_name); $x++ )
    {
        echo $first_name[$x];
        echo $email[$x];
        echo $sex[$x];
        echo "<br/>";
    }

This scales as well. All you need to do is add your respective array vars whenever you need new fields to be added.

However, VolkerK's solution is the best to avoid miss couple between email and username. So you have to generate HTML code with PHP like this:

<? foreach ($i = 0; $i < $total_data; $i++) : ?>
	<input type="text" name="name[<?= $i ?>]" />
	<input type="text" name="email[<?= $i ?>]" />
<? endforeach; ?>

Change $total_data to suit your needs. To show it, just like this:

$output = array_map(create_function('$name, $email', 'return "The name is $name and email is $email, thank you.";'), $_POST['name'], $_POST['email']);
echo implode('<br>', $output);

Assuming the data was sent using POST method.

This is an easy one:

foreach($_POST['field'] as $num => $val) {
    print ' ' . $num . ' -> ' . $val . ' ';
}

Using this method should work:

$name = $_POST['name'];
$email = $_POST['account'];
while($explore=each($email)) {
    echo $explore['key'];
    echo "-";
    echo $explore['value'];
    echo "<br/>";
}