PHP - Xampp reporting erros while hosting does not

Question

Could someone explain me why when testing some PHP code on localhost warns with errors and uploading it on my hosting does not?

I find it disturbing, since is not the first time it happens, but seems like it works fine anyway...

Example:

Using a simple protect password in a single page:

<?php
// Define your username and password
$username = "logitek_00164";
$password = "JHvzQ3jK";

if ($_POST['txtUsername'] != $username || $_POST['txtPassword'] != $password) {

?>

<form name="form" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">

<label for="txtUsername">Username:</label>

<input type="text" title="Enter your Username" name="txtUsername" />

<label for="txtpassword">Password:</label>

<input type="password" title="Enter your password" name="txtPassword" />
<input type="submit" name="Submit" value="Login" />
</form>

Reports this error: Notice: Undefined index: txtUsername in C:\xampp\htdocs\test_password\index.php on line 6

I know that reporting errors OFF could be a solution (the worst one), and in the other hand, I could solve the problem, but I am just wondering if the problem comes by some PHP configuration or not.

Thank you in advance

Answer 1

You should use:

if ((isset($_POST['txtUsername'])&&$_POST['txtUsername'] != $username )|| (isset($_POST['txtUsername'])&&$_POST['txtPassword'] != $password)) {

Well error reporting is also configured in php.ini you can disable(I wont recommend in development) from there.

Answer 2

Because php in XAMPP is configured like that in php.ini and php on your server isn't.

See http://www.php.net/manual/en/errorfunc.configuration.php#ini.error-reporting

It can also be configured inside your php script. See http://php.net/manual/en/function.error-reporting.php