@php
    if(!is_array($source_company)){
        $source_company = explode(",",$source_company);
    }
@endphp

<label>Source Company</label>
<select class="form-control select2" name="source_company[]" multiple id="source_company">
    <option {{ in_array('supportroom',$source_company) ? 'selected' : '' }}  value="supportroom">SupportRoom</option>
    <option {{ in_array('nixy',$source_company) ? 'selected' : '' }} value="nixy">NIXY</option>
</select>