提交表单后请保留复选框 [英] keep checkbox checked after submitting form

问题描述

目前，我可以使用php中的 isset 来根据选中的复选框名称属性回显表中的行。

不过，我希望在提交表单后检查复选框，如果用户取消选中复选框，我想使用php中的第三个else语句，它将从中检索所有行桌子。我怎样才能做到这一点？是否也可以隐藏未选中的框，并在用户选中一个框时仅显示该复选框。提前致谢。

 < div>大小
< form id =formmethod =postaction => 
< input type =checkboxname =smallclass =checkbox/>小
< input type =checkboxname =mediumclass =checkbox>介质LT峰; br> 
< / form> 
< / div> 
 
< script type =text / javascript> $（$'$'$'$'$'$'$'$'$'$'$'$'$''''。 $ b}）; 
}）; 
< / script> 
 
 <？php 
 if（isset（$ _ POST [small]））{
 $ paginate = new pagination（$ page，'SELECT * FROM pants WHERE size ='small'ORDER BY id desc'，$ options）; 
 
 $ b else if（isset（$ _ POST [medium]））{
 $ paginate = new pagination（$ page，'SELECT * FROM pants where size =' medium'ORDER BY id desc'，$ options）; 
} 
 else {$ paginate = new pagination（$ page，'SELECT * FROM pants ORDER BY id desc'，$ options）; 
 
} 
？> 
  

解决方案

 < input type =checkboxname =smallclass =checkbox<？=（isset（$ _ POST ['small']）？'checked'：''）？> />小
< input type =checkboxname =mediumclass =checkbox<？=（isset（$ _ POST ['medium']）''checked'：''）？> >介质LT峰; br> 
  

Currently I am able to echo the rows from table according to the checked checkbox name attribute using isset in php .

However, I would like the checkboxes be checked after submitting the form and also if the user unchecks the checkbox I would like to use the third else statement in the php where it will retrieve all rows from the table. How can I achieve this? is it also possible to hide the unchecked box and only show the checked box when a user checks one box. Thanks in advance.

<div> Size
<form id="form" method="post" action="">
<input type="checkbox" name="small" class="checkbox" /> Small
<input type="checkbox" name="medium"  class="checkbox">  Medium<br>
</form> 
</div>

<script type="text/javascript">  
    $(function(){
     $('.checkbox').on('change',function(){
        $('#form').submit();
        });
    });
</script>

<?php
if (isset($_POST["small"])){
$paginate = new pagination($page, 'SELECT * FROM pants WHERE size='small' ORDER BY id desc', $options);

}  
else if (isset($_POST["medium"])){
  $paginate = new pagination($page, 'SELECT * FROM pants where size='medium' ORDER BY id desc', $options);
 }
else { $paginate = new pagination($page, 'SELECT * FROM pants ORDER BY id desc', $options);

}
 ?>

解决方案

<input type="checkbox" name="small" class="checkbox" <?=(isset($_POST['small'])?' checked':'')?> /> Small
<input type="checkbox" name="medium"  class="checkbox" <?=(isset($_POST['medium'])?' checked':'')?> >  Medium<br>

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