PHP error

[ZaF]

---

Hi mga bossing! Nagpractice practice ko ug php para maghimo ko ug website sa amo shop pero naa man error. Ang ako gi himo kay simple login ug register system ra.. Mao ni ang error:

Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\shopname\register.php:32) in C:\xampp\htdocs\shopname\register.php on line 33

Unsa diay rason ngano in ana ang error? Ug unsa ang solution?
register.php

<?php 
	include "includes/connection.php";	
	
	if(!empty($_POST['username']) && !empty($_POST['password']))
	{			
		$username = $_POST['username'];
		$password = $_POST['password'];
		$confirmPassword = $_POST['confirmPassword'];
		$email = ($_POST['email']);
		
		if(strlen($username) > 32 || strlen($username) < 3){
			echo "<center> Username must contain 3 to 32 characters!";
		}else{
			$res = mysql_query("SELECT * FROM `users` WHERE `username` = '".$username."'");
			$num = mysql_num_rows($res);
					
			if($num == 1){				
				echo  "The <b>Username</b> you have chosen is already taken!";
			}else{	
				if(strlen($password) < 5 || strlen($password) > 32){
					echo "Your <b>Password</b> must be between 5 and 32 characters long!";
				}else{							
					if($confirmPassword != $password){
						echo "The <b>Password</b> supplied didn't match!";
					}else{
						$res = mysql_query("SELECT * FROM `users` WHERE `email` = '".$email."'");
						$num = mysql_num_rows($res);	
						if($num == 1){
							echo "The <b>email</b> supplied is already taken!";
						}else{						
							$res2 = mysql_query("INSERT INTO `users` (`username`, `password`, `email`) VALUES('".$username."','".$password."','".$email."')");
							echo "You have succesfully registered!";
							header('location: index.php');
						}
					}
				}
			}
		}
	}		
?>
<form action="register.php" method="post">
	<table cellpadding="2" cellspacing="0" border="0">
		<tr>
			<td>Username: </td>
			<td><input type="text" name="username" /></td>
			</tr>
		<tr>
			<td>Password: </td>
			<td><input type="password" name="password" /></td>
		</tr>
					
		<tr>
			<td>Confirm Password: </td>
			<td><input type="password" name="confirmPassword" /></td>
		</tr>
					
		<tr>
			<td>Email: </td>
			<td><input type="text" name="email" size="25"/></td>
		</tr>
		
		<tr>
			<td colspan="2" align="center"><input type="submit" name="submit" value="Register" /></td>
			</tr>
		<tr>
			<td colspan="2" align="center"><a href="index.php">Login</a> | <a href="forgot.php">Forgot Pass</a></a></td>
		</tr>
	</table>
</form>

connection.php

<?php
	$dbhost = 'localhost';
	$dbuser = 'root';
	$dbpassword = '';
	$dbname = 'shopname';

	$connection = mysql_connect("$dbhost", "$dbuser", "$dbpassword") or die("MySQL Error: " . mysql_error());
	mysql_select_db("$dbname", $connection) or die("MySQL Error: " . mysql_error());
?>

I having a problem with this one for a couple of days now.. Bad for a newbie... Anyway it would be great if somebody will help me.

[twisted_180]

http://www.geeklog.net/faqman/index.php?op=view&t=38

Solve PHP error: Cannot modify header information – headers already sent | PHP programming | Tech-Recipes

[doomsweek]

I think that some of the messages won't be displayed to the user since they'll be redirected anyway because of the location header. That's what the error is trying to tell you.

echo "You have succesfully registered!";
header('location: index.php');

[ZaF]

thanks xiao! now it's working..

what's the reason diay naay warning ang page?

[xiao_xiao]

@ZaF: no probz... your welcome.

http://www.geeklog.net/faqman/index.php?op=view&t=38

http://www.tech-recipes.com/rx/1489/...-already-sent/

if sure ang TS nga walay whitespace then I'm sure dili na maka-solve imong links nga gi-post

i-post lng nako ug balik kay gi-delete sa admin nga seloso

<?php 
    session_start();
    ob_start();
    include "includes/connection.php";    
    
    if(!empty($_POST['username']) && !empty($_POST['password']))
    {            
        $username = $_POST['username'];
        $password = $_POST['password'];
        $confirmPassword = $_POST['confirmPassword'];
        $email = ($_POST['email']);
        
        if(strlen($username) > 32 || strlen($username) < 3){
            echo "<center> Username must contain 3 to 32 characters!";
        }else{
            $res = mysql_query("SELECT * FROM `users` WHERE `username` = '".$username."'");
            $num = mysql_num_rows($res);
                    
            if($num == 1){                
                echo  "The <b>Username</b> you have chosen is already taken!";
            }else{    
                if(strlen($password) < 5 || strlen($password) > 32){
                    echo "Your <b>Password</b> must be between 5 and 32 characters long!";
                }else{                            
                    if($confirmPassword != $password){
                        echo "The <b>Password</b> supplied didn't match!";
                    }else{
                        $res = mysql_query("SELECT * FROM `users` WHERE `email` = '".$email."'");
                        $num = mysql_num_rows($res);    
                        if($num == 1){
                            echo "The <b>email</b> supplied is already taken!";
                        }else{                        
                            $res2 = mysql_query("INSERT INTO `users` (`username`, `password`, `email`) VALUES('".$username."','".$password."','".$email."')");
                            echo "You have succesfully registered!";
                            header('location: index.php');
                            ob_end_flush();
                            exit;
                        }
                    }
                }
            }
        }
    }        
?>
<form action="register.php" method="post">
    <table cellpadding="2" cellspacing="0" border="0">
        <tr>
            <td>Username: </td>
            <td><input type="text" name="username" /></td>
            </tr>
        <tr>
            <td>Password: </td>
            <td><input type="password" name="password" /></td>
        </tr>
                    
        <tr>
            <td>Confirm Password: </td>
            <td><input type="password" name="confirmPassword" /></td>
        </tr>
                    
        <tr>
            <td>Email: </td>
            <td><input type="text" name="email" size="25"/></td>
        </tr>
        
        <tr>
            <td colspan="2" align="center"><input type="submit" name="submit" value="Register" /></td>
            </tr>
        <tr>
            <td colspan="2" align="center"><a href="index.php">Login</a> | <a href="forgot.php">Forgot Pass</a></a></td>
        </tr>
    </table>
</form>

[xiao_xiao]

iklaro lng nako ang changes...
mag butang ka ug

ob_start();

sa start.
tapos after sa header('Location: index.php'); kay mag butang ka ug

ob_end_flush();
exit;

[iamk]

just got this when i googled the error:

Solve PHP error: Cannot modify header information – headers already sent | PHP programming | Tech-Recipes

[xiao_xiao]

problem already solved. that link will not solve the problem even if you'll try it.

[doomsweek]

Actually, the information inside the link is correct and helpful.

ob_start() solves the problem by starting output buffering. This means that any output won't be sent until it has reached the ob_end_flush() file. You could also replace the line:

header('location: index.php');

into a javascript redirect, as what most websites do.

[romano2717]

Actually, the information inside the link is correct and helpful.

ob_start() solves the problem by starting output buffering. This means that any output won't be sent until it has reached the ob_end_flush() file. You could also replace the line:

header('location: index.php');

into a javascript redirect, as what most websites do.

sakto, ms nindot ang javascript na redirect script.. mao ni gamit nko perme.