What is the common issue with deleting multiple checkboxes in PHP forms?

When deleting multiple checkboxes in PHP forms, a common issue is that only the checked checkboxes are submitted to the server. This means that if a checkbox is left unchecked, its corresponding value will not be sent, making it difficult to determine which checkboxes should be deleted. To solve this issue, you can use an array to store the values of all checkboxes, including the unchecked ones. This way, you can easily loop through the array and delete the selected checkboxes. 

// HTML form with checkboxes
<form method="post" action="delete.php">
    <input type="checkbox" name="checkboxes[]" value="1"> Checkbox 1
    <input type="checkbox" name="checkboxes[]" value="2"> Checkbox 2
    <input type="checkbox" name="checkboxes[]" value="3"> Checkbox 3
    <input type="submit" value="Delete">
</form>

// PHP code to delete selected checkboxes
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    if(isset($_POST['checkboxes'])) {
        foreach($_POST['checkboxes'] as $checkbox) {
            // Perform delete operation based on checkbox value
            // Example: deleteCheckbox($checkbox);
        }
    }
}

Keywords

PHP forms checkboxes array unset

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