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Home Backend Development PHP Tutorial php 怎么输出复选框呢?

php 怎么输出复选框呢?

Jun 23, 2016 pm 02:05 PM

表单有6个复选框,如果选中的分别是第126个,数据库存为   1,2,6

现在的问题是  在修改的页面 怎么用php从数据库取值,输出6个复选框,让126为checked ?   


回复讨论(解决方案)

$row['id']=1;
>

我的意思是  从数据库取到值 1,2,6 之后, 怎么输出6个复选框,让第126个默认选中,345个不选中,
难点在于中间插入不选中的

我的意思是  从数据库取到值 1,2,6 之后, 怎么输出6个复选框,让第126个默认选中,345个不选中,
难点在于中间插入不选中的
把你选出来的复选框(比如对应1,2, 6)所对应的checked 属性设置上就可以了啊。
如果你数据库存的是1,2,6,你可以直接把对应的复选框的名字或id也设置成对应的,然后就可以直接访问到需要改变状态的checkbox

我的意思是  从数据库取到值 1,2,6 之后, 怎么输出6个复选框,让第126个默认选中,345个不选中,
难点在于中间插入不选中的
做个if判断,等于1,2,6的就 checked, 不等的就不checked

1

echo "<input type="/checkbox/" value=/"1/" checked=true>";echo "<input type="/checkbox/" value=/"2/" checked=true>";echo "<input type="/checkbox/" value=/"3/">";echo "<input type="/checkbox/" value="/4/">";echo "<input type="/checkbox/" value="/5/">";echo "<input type="/checkbox/" value="/6/" checked=true>";

Copy after login

1

$arr=array(1,2,6);for($i=0;$i<6;$i++){    $checked=in_array($i+1,$arr) ? 'checked' : '';    echo "<input type='checkbox' ".$checked.">\n";}

Copy after login

...
数据库取值
$a = '1,2,6';

请问if括号里面怎么写?


" />
" />
" />
" />
" />
" />




$a='1,2,6';
$ar=explode(',',$a);
$i=0;
?>
 />
 />
 />
 />
 />
 />

终于搞定,多谢楼上大牛。

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