How to Store Arrays as Session Variables in PHP: Keeping Data Across Multiple Pages?

Storing Arrays as Session Variables in PHP

When handling web applications, it's often necessary to store data across multiple pages. PHP provides session variables as a means of storing user-specific information throughout their browsing session. The session variable can contain various types of data, including arrays.

Storing an Array in a Session Variable

To store an array as a session variable, simply use array assignment:

<code class="php">$_SESSION['my_array'] = [1, 2, 3, 4, 5];</code>

This will create a session variable named "my_array" and store the given array in it.

Your Specific Scenario

In your case, you have an array representing a list of names on page 2. When this page is submitted, you want the array to be stored in a session variable. To achieve this, you can use:

<code class="php">$_SESSION['names'] = $_POST['names'];</code>

This will save the array of names submitted from the form into a session variable named "names."

Behavior When Returning to Page 1

If you return to page 1 and click another cell, the session array ("names") will retain the values assigned on page 2 unless you explicitly change them or unset the session variable. This is because session variables persist until they are modified or removed.

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