<input type="checkbox" name="time[]" value="free" <?php if(!strpos($row['best'], 'free')=="false") { echo "checked='checked'";} ?> />Free
    <input type="checkbox" name="time[]" value="Open" <?php if(!strpos($row['best'], 'Open')=="false") { echo "checked='checked'"; }?>/>Open Source
    <input type="checkbox" name="time[]" value="portable" <?php if(!strpos($row['best'], 'portable')=="false") { echo "checked='checked'"; }  ?> />Portable
    <input type="checkbox" name="time[]" value="support" <?php if(!strpos($row['best'], 'support')=="false") {
                        echo "checked='checked'"; }?> />Support