显示前面ACF（Wordpress）的复选框值

Question

I'm having some trouble trying to display checkboxes values created with ACF. I have a group of 12 checkboxes made with ACF, where each checkbox is a month: jan : Jan / feb : Feb / mar : Mar / etc.

What i need to achieve is to display all of those 12 values in the frontend, with a particular CSS class if the month has been checked in the backend. For example, if the user checks "Jan", "Apr", "Jul" and "Sep":

<span class="selected">Jan</span>
<span>Feb</span>
<span>Mar</span>
<span class="selected">Apr</span>
<span>May</span>
<span>Jun</span>
<span class="selected">Jul</span>
<span>Ago</span>
<span class="selected">Sep</span>
<span>Oct</span>
<span>Nov</span>
<span>Dec</span>

Using the example code from the docs (https://www.advancedcustomfields.com/resources/checkbox/), I'm only getting the selected months but not all months in the frontend:

<span>Jan</span>
<span>Apr</span>
<span>Jul</span>
<span>Sep</span>

Answer 1

Please check below code and output it helps you.

<?php $allCheckbox = get_field('month_checked_boxes'); //Checked value from backend

$field_key = "field_593f77cdc5068"; //Get value using key
$post_id = get_the_ID();
$field = get_field_object($field_key, $post_id);
foreach($field['choices'] as $lab => $val){
if(in_array($val, $allCheckbox)){
    $checked = 'checked = "checked"';   
    $enable = '';       
} else {
    $checked = '';
    $enable = 'disabled=""';
} ?>
<input type="checkbox" name="month" id="month" value="<?php echo $lab; ?>" <?php echo $enable; ?> <?php echo $checked; ?> /><?php echo $val; ?><br>

Please change field key as par your checkbox field from ACF. Also check output below.