How to pass array through PHP and jump to page

In PHP development, we often encounter situations where we need to pass data in an array to another page and process it. This article will introduce how to pass an array through PHP and jump to the page.

1. Pass the array through the form

You can use the POST or GET method of the form to pass the array to the next page. First, we need to create a form on the current page and put the data in the array into the form in the form of hidden fields. The code is as follows:

<form method="POST" action="target_page.php">
    <input type="hidden" name="my_array[]" value="<?php echo implode(',', $my_array); ?>">
    <input type="submit" value="submit">
</form>

In the above code, we use the implode function to convert the array into a string and store it in a hidden field named "my_array[]". What needs to be noted here is that we add "[]" after the field name to turn it into an array, which is more convenient when receiving data.

Next, in the target page, you can get the passed array through the following code:

$my_array = explode(',', $_POST['my_array'][0]);

2. Use Session to pass the array

Another way to pass the array is Passed through Session. Store the array in Session, and then use the same Session variable in another page to get the array.

In the current page, we can store the array in the Session through the following code:

session_start();
$_SESSION['my_array'] = $my_array;

Next, in the target page, we can obtain the passed array through the following code:

session_start();
$my_array = $_SESSION['my_array'];

It should be noted that when using Session to pass an array, you need to ensure that the session_start() function is used in the target page to open the Session.

3. Pass the array through the URL

Another way to pass the array is through the URL. You can convert the array into a string and pass it to the next page as a parameter of the URL. In the target page, convert the string into an array.

In the current page, we can convert the array to a string by the following code and pass it as a URL parameter:

$url = "target_page.php?my_array=".implode(',', $my_array);
header("Location: $url");

Next, in the target page, we can pass the following The code obtains the passed array:

$my_array = explode(',', $_GET['my_array']);

It should be noted that when using the URL to pass the array, the size of the array needs to be controlled within the length range of the URL to avoid the problem of delivery failure caused by the URL being too long.

Summary

This article introduces how to pass arrays and jump to pages in PHP through three methods: form, session and URL. It is necessary to choose a suitable method for delivery according to the specific scenario. At the same time, you need to pay attention to the URL length when passing the array to avoid delivery failure. By studying this article, I believe that readers have mastered the method of passing arrays, providing more possibilities for PHP development.

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