How Can I Retrieve Values from Multiple Selected Checkboxes Using PHP's $_POST?

Retrieving $_POST Data from Multiple Checkboxes

When working with forms containing multiple checkboxes, it becomes essential to identify which checkboxes have been selected. This article will guide you through a method to retrieve the values of checked checkboxes using PHP's $_POST superglobal.

To retrieve the selected checkbox values, you must first set the name attribute of each checkbox to an array, like "check_list[]". This modification allows your script to access all the checkboxes as an array in $_POST['check_list'][] after form submission.

Consider the following form example:

<form action="test.php" method="post">
    <input type="checkbox" name="check_list[]" value="value 1">
    <input type="checkbox" name="check_list[]" value="value 2">
    <input type="checkbox" name="check_list[]" value="value 3">
    <input type="checkbox" name="check_list[]" value="value 4">
    <input type="checkbox" name="check_list[]" value="value 5">
    <input type="submit">
</form>

PHP Code to Retrieve Checked Checkbox Values:

if (!empty($_POST['check_list'])) {
    foreach ($_POST['check_list'] as $check) {
        echo $check; // Echoes the value of each checked checkbox
    }
}

In your specific case, replace the "value" attributes with your $row['Report ID'] to retrieve the primary keys of the checked messages for deletion purposes.

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