how to know if a check box is checked after submit??, help pls!

[kennis]

my checkbox is the following:
<td>option1<input type=\"checkbox\" name=\"option1\"></td>

ok when i press submit
if (submit){

if (???){
how to do that?
}

}

by the way the variable $option1 what value it will returns to me?

thx for help~

[tsinka]

Hi,

add the value attribute to the checkbox tag. The value will then be submitted as

$POST['option1'] (method="post")
or
$GET['option1'] (method="get")

So e.g.

if (isset($_POST['option1'])) {
// option1 checked
}

should do the trick. $_POST['option1'] will not exist if the checkbox hasn't been checked.

Thomas

[kennis]

ok i understand the idea 🙂
btw
<input type="checkbox" name="option1" value="on" />
what does value="on" do? it doesnt check the box because i tried..
another question the variable $_POST['option1'] what value returns me?
thank you bro~

[harman]

To see if it was checked:

set your html part like this
<td>
option1 <input type="checkbox" name="option1" value="1" <?=$sel?>>
</td>

when you submit the form you can check if the box was checked or not like this

if($_POST['option1']==1){
   //do what ever
}

//to have it selected when the page loads
if($option1==1)
   $sel = 'checked';
else
   $sel = '';