PHP解析数组的帖子

Question

A page is posting an array to me like this:

<input type="text" name="fields[email_address][value]" value="1" />
<input type="text" name="fields[first_name][value]" value="jim" />
<input type="text" name="fields[zip_code][value]" value="45254" />...

An array.

I can loop through it like this easy enough

    foreach ( $_POST['fields'] as $key => $field ) {

        echo $key." ".$field['value'] ;
        }

Result of above:

first_name jim
email_address 1
address_postal_code 45254

But what I really need to do is reference just the zip (45254) out of the array, maybe like:

echo $_POST['fields']['zip_code']; //or
echo $_POST['fields']['zip_code']['value']; 

result: 45254

Is this possible?

Answer 1

Update

<input type="text" name="fields[zip_code][value]" value="45254" />

to be

<input type="text" name="fields[zip_code]" value="45254" />

Edit: I wasn't aware you can't modify the html, that wasn't specified in the original question.

The only thing you can really do is do:

$_POST['fields']['zip_code'] = $_POST['fields']['zip_code']['value'];

However at that point, you might as well just assign $_POST['fields']['zip_code']['value'] to a variable and use that.

If you can't update the html of the form, all you can do is manipulate the data after it's been assigned to the $_POST superglobal like it's any other array

Edit 2: Adding a complete snippet to try:

If you do, what do you get?:

<?php
foreach ( $_POST['fields'] as $key => $field ) {
    echo $key." ".$field['value'] ."<br />";
}
echo $_POST['fields']['zip_code']['value'] . "<br />";
$_POST['fields']['zip_code'] = $_POST['fields']['zip_code']['value'];
echo $_POST['fields']['zip_code'];
?>

I just tried that with a simple form of:

<form method="post" action="test.php">
  <input type="text" name="fields[email_address][value]" value="1" />
  <input type="text" name="fields[first_name][value]" value="jim" />
  <input type="text" name="fields[zip_code][value]" value="45254" />
  <input type="submit" />
</form>

And it works as expected.