Member Avatar for ashiiiish

How to limit the number of checkboxes to be selected using php???

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  • 11 Replies
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  • Latest Post Latest Post by ashiiiish

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Member Avatar for vibhaJ

Using php?? OR using js?
Post your code.

Member Avatar for Pro2000

Checkboxes are limited via HTML.. They'll be already limited when they appear in the page you create.

Edited by Pro2000 because: n/a
Member Avatar for ashiiiish

suppose i am posting 5 checkboxes and i want users to select any 3 of them then how to do it???

Member Avatar for karthik_ppts

can you please post your code here?

Member Avatar for twiss

You need JS. If you're using jQuery, you could do something like this (if not, it's the same thing but it would take quite a bit more coding):

$('input:checkbox').click(function(){
  $('input:checkbox:not(:checked)').attr('disabled', $('input:checkbox:checked').length >= 3 ? 'disabled' : '');
});
Member Avatar for ashiiiish

my code is too long its about 327 checkboxes in different section i need to limit the selection in all of the sections

its simply lyk i hav putd some checkboxs and nothing and is using php for other things and nothing else

Member Avatar for twiss

Well, you could also count the amount of selected boxes with php and echo a warning if it's > 3, of course, but personally I'd definitely use JS for this.

Member Avatar for divyakrishnan

Try this code It using Java script

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script>
function check()
{
var len=document.f.ck.length;
var ck=document.f.ck;
var l=0;
for(var i=0;i<len;i++)
{
if(ck[i].checked==true)
{
l++;
}
if(l>3)
{
ck[i].checked = false ;
}
}



}
</script>
</head>

<body>
<form id="form1" name="f" method="post" action="">
  <p>
    <input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()"/> 
  PHP</p>
  <p>
    <input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()"/> 
  JSP</p>
  <p>
    <input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()"/> 
  JAVA</p>
  <p>
    <input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()"/> 
  CSS</p>
  <p>
    <input name="ck" type="checkbox" id="ck" value="checkbox" onclick="check()" /> 
    HTML</p>
  <p>
    <input type="submit" name="Submit" value="Submit" />
  </p>
</form>
</body>
</html>
Member Avatar for twiss

I think it's more user friendly to disable the checkboxes, but well. That's a possibility too.

Member Avatar for divyakrishnan

Using PHP I dnt have any idea.

Member Avatar for ashiiiish

Thanx 4 ur help I m done wid this

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