代码_美国VPS_搬瓦工CN2 GIA VPS

怎么让输入框的数值不能小于5

<?php
$show_reward_post = FALSE;
$sg_reward_vip = setting_get(‘sg_reward_vip’);
if($route == ‘thread’ && $action == ‘create’) {
$thread_reward[‘type’] = ‘2’;
$thread_reward[‘value’] = ”;
$show_reward_post = TRUE;
} elseif($route == ‘post’ && $action == ‘update’ && $isfirst) {
$thread_reward = sg_reward_vip_read_by_tid($tid);
$show_reward_post = TRUE;
}
if(array_key_exists($gid,$sg_reward_vip[‘sg_post_reward_group’]) && $show_reward_post) {
?>
<script>
var jfid = $(‘select[name="fid"]’);
var fid = <?php echo intval($fid); ?> || $(‘select[name="fid"]’).val();
jfid.on(‘change’, function() {
var fid = jfid.val();
fid_on_reward(fid);
});
function fid_on_reward(fid) {
var xfid = <?php echo xn_json_encode($sg_reward_vip[‘sg_forum’]); ?>;
var s = ”;
var select = xn.form_select(‘sg_type’, <?php echo xn_json_encode(sg_reward_vip_type($sg_reward_vip[‘sg_type’])); ?>, ‘<?php echo $thread_reward[‘type’]; ?>’);
if(xfid.hasOwnProperty(fid)) {
s += ‘<div class="form-group">’+select;
s += ‘</div><div class="form-group"><input type="text" class="form-control ml-1" size="10" placeholder="" name="sg_value" required="required" value="<?php echo $thread_reward[‘value’]; ?>" id="sg_value"></div>’;
}
$(‘#sg_reward_vip_div’).html(s);
}
fid_on_reward(fid);
</script>
<?php } ?>