PHP - MySql : How to store and retrieve checkbox value with other option

I using checkbox to get and store interest of user.

Store these data in database mysql with comma separated

My php code for retrive these data and display in html page

<?php

....

// Get data
$result = profile($uname);
$result['interest'] = explode(',', $result['interest']);

?>

....

<div class="col-sm-6">
    <div class="form-check checkbox-style">
        <label class="label-weight">Interests</label><br>
        <label class="form-check-label label-weight">
            <input type="checkbox" class="form-check-input" name="interest[]" onclick="return interest_validate(this);" id="selectall"><span class="check-label-pad"> Select all</span></label></label><label for="" class="opacity-set label-set" id="select-label"></label><br>
        <label class="form-check-label label-weight">
            <input type="checkbox" class="form-check-input" name="interest[]" onclick="return option_select(this);" value="option1" <?php echo in_array('option1',$result['interest']) ? 'checked' : ''; ?>><span class="check-label-pad">Option 1</span></label><br>
        <label class="form-check-label label-weight">
            <input type="checkbox" class="form-check-input" name="interest[]" onclick="return option_select(this);" value="option2" <?php echo in_array('option2', $result['interest']) ? 'checked' : ''; ?>><span class="check-label-pad">Option 2</span></label><br>
        <label class="form-check-label label-weight">
            <input type="checkbox" class="form-check-input" name="interest[]" onclick="return option_select(this);" value="option3" <?php echo in_array('option3', $result['interest']) ? 'checked' : ''; ?>><span class="check-label-pad">Option 3</span></label><br>
        <label class="form-check-label label-weight">
            <input type="checkbox" class="form-check-input" name="interest[]" id="other_checkbox" onclick=" return other_validate(this);" value="other"><span class="check-label-pad"  >Other</span> &nbsp;&nbsp;</label><input type="text " class="text-style-other opacity-set" id="other-text" onblur="return other_text_validate();" />
        <label for="" class="opacity-set label-set" id="other-text-label"></label>
    </div>
</div>

Issue : in edit mode, I am using "in_array()" for to give as default checked to checkbox as per database value. But how to check "Other" (check attached image) option and display value ? which condition i need to add here?