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I don't know why my checkbox isn't working.

Thaikhan

By Thaikhan
in PHP Coding Help

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Thaikhan Newbie

Thaikhan

Posted
Posted

Hey guys,

 

I'm struggling to find why my checkbox isn't posting as set. I would really appreciate it if someone could tell me what I'm doing wrong.

 

Here's the form:

	$form = "<form action='./register.php' method='post'>
	<table>
	<tr>
		<td></td>
		<td><font color='red'>$errormsg</font></td>
	</tr>
	<tr>
		<td>Username:</td>
		<td><input type='text' name='user' value='$getuser' /></td>
	</tr>
	<tr>
		<td>Email:</td>
		<td><input type='text' name='email' value='$getemail' /></td>
	</tr>
	<tr>
		<td>Password:</td>
		<td><input type='password' name='pass' value='' /></td>
	</tr>
	<tr>
		<td>Retype Password:</td>
		<td><input type='password' name='retypepass' value='' /></td>
	</tr>
	<tr>
		<td>Receive Forum Notifications:</td>
		<td><input type='checkbox' name='fn' value='1' /></td>
	</tr>
	<tr>
		<td></td>
		<td><input type='submit' name='registerbtn' value='Register' /></td>
	</tr>
	</table>
	</form>";

And here's the beginning of the page:

<?php
error_reporting(E_ALL ^ E_NOTICE);
?>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
	<head>
		<meta http-equiv="content-type" content="text/html; charset=utf-8" />
		<title>Member System - Register</title>
		<link href="./style.css" rel="stylesheet" type="text/css" />
	</head>
<body>
<?php

	if ( $_POST['registerbtn'] ) {
		$getuser = $_POST['user'];
		$getemail = $_POST['email'];
		$getpass = $_POST['pass'];
		$getretypepass = $_POST['retypepass'];
		if (isset($_POST['fn'])) {
			echo "checked";
			exit();
		}
		else
			echo "unchecked";
			exit();

Thanks so much!!

Thaikhan Newbie

Thaikhan

Posted
  • Author
Posted

My problem is that it's not setting the variable. Any ideas?

if ( $_POST['registerbtn'] ) {
	$getuser = $_POST['user'];
	$getemail = $_POST['email'];
	$getpass = $_POST['pass'];
	$getretypepass = $_POST['retypepass'];
		if (isset($_POST['fn'])) {
			$fn == 1;
		}
		else {
			$fn == 0;
		}

	echo $fn;
	exit();

Nothing is being echoed...

jazzman1 Member

jazzman1

Posted
Posted

There's no mysql_error and the browser isn't coming up with anything. Neither is the server log.

 

No, that's impossible or you have a logical error somewhere in the script.

 

My briefly test just works fine:

<?php
error_reporting(-1);

	if (!empty($_POST['registerbtn'])) {
		$getuser = $_POST['user'];
		$getemail = $_POST['email'];
		$getpass = $_POST['pass'];
		$getretypepass = $_POST['retypepass'];
		if (isset($_POST['fn'])) {
			echo "checked";
			exit();
		}
        }
?>
	<form action='index.php' method='post'>
	<table>
	<tr>
		<td></td>
		<td><font color='red'></font></td>
	</tr>
	<tr>
		<td>Username:</td>
		<td><input type='text' name='user' value='' /></td>
	</tr>
	<tr>
		<td>Email:</td>
		<td><input type='text' name='email' value='getemail' /></td>
	</tr>
	<tr>
		<td>Password:</td>
		<td><input type='password' name='pass' value='' /></td>
	</tr>
	<tr>
		<td>Retype Password:</td>
		<td><input type='password' name='retypepass' value='' /></td>
	</tr>
	<tr>
		<td>Receive Forum Notifications:</td>
		<td><input type='checkbox' name='fn' value='1' /></td>
	</tr>
	<tr>
		<td></td>
		<td><input type='submit' name='registerbtn' value='Register' /></td>
	</tr>
	</table>
	</form>
Thaikhan Newbie

Thaikhan

Posted
  • Author
Posted

The script below will echo checked or unchecked accordingly, so it's working, but I don't understand why it's not echoing 0 or 1 for var $fn.

	if ( $_POST['registerbtn'] ) {
		$getuser = $_POST['user'];
		$getemail = $_POST['email'];
		$getpass = $_POST['pass'];
		$getretypepass = $_POST['retypepass'];
		if (isset($_POST['fn'])) {
			$fn == 1;
			echo $fn;
			echo "Checked";
			echo mysql_error();
			exit();
		}
		else {
			$fn == 0;
			echo $fn;
			echo "Unchecked";
			echo mysql_error();
			exit();
		}
jazzman1 Member

jazzman1

Posted
Posted (edited)

I am not sure whether the checkbox element accepts a value attribute itself, check at docs, but .. entirely sure that the checked attribute can be used to indicate the default state.

So, you should set this to either true or false.

Edited by jazzman1
mac_gyver Prolific Member

mac_gyver

Posted
Posted (edited)

two == is a comparison operator. your code is not assigning a value to $fn (one =), it's comparing $fn with 1 or 0 and if you had php's error reporting turned full on, you would know this because you would be getting an undefined variable error at the $fn references.

Edited by mac_gyver
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