function create_error_string($login, $password, $email, $gender)
{
$login_pattern = "^\\s+\$";
$password_pattern = "^(?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{4,15}\$";
//^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{4,8}$
// Based on a regex by Michael Rushton
//$email_pattern = '/^(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){255,})(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){65,}@)(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22))(?:\\.(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}:)|(?:(?!(?:.*[a-f0-9]:){5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}:)?)))?(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\\.(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\\]))$/iD';
$errors_occurred = false;
$error_string = "Errors: <ul>";
if (strlen(trim($login)) == 0 || preg_match($login_pattern, $login)) {
$error_string .= "<li>login cannot be empty nor contain spaces</li>";
$errors_occurred = true;
}
// preg_match form of validation
if (!$password == null && !preg_match($password_pattern, trim($password))) {
$error_string .= "<li>password must be at least 4 characters, no more than 15 characters, and must include at " . "least one upper case letter, one lower case letter, and one numeric digit</li>";
$errors_occurred = true;
}
// other form of validation
if (!filter_var(trim($email), FILTER_VALIDATE_EMAIL)) {
$error_string .= "<li>invalid email</li>";
$errors_occurred = true;
}
// medieval way of validation
if (strlen(trim($gender)) != 1 && !(strcmp($gender, "M") || strcmp($gender, "F"))) {
$error_string .= "<li>gender must be chosen</li>";
$errors_occurred = true;
}
$error_string .= "</ul>";
if ($errors_occurred) {
$_SESSION['warning'] = message_warning($error_string);
return $error_string;
} else {
return "";
}
}
echo "<li><a href=\"../../php/logout.php\">logout</a></li>";
}
?>
</ul>
</li>
</ul>
</nav>
</header>
<section class="content">
<h2>data manipulation</h2>
<article class="card_slightly_extended_width">
<h3>user edit</h3>
<?php
if (!isset($_SESSION['user_to_edit'])) {
print message_warning("No user is set to be edited.");
} else {
$user_row = $_SESSION['user_to_edit'];
$login = $user_row[0];
$password = "";
$email = $user_row[4];
$note = $user_row[6];
$superuser = false;
if ($user_row[3] == "t") {
$superuser = true;
}
$superuser_checked = "";
if ($superuser) {
$superuser_checked = "checked";
}
$gender_string = $user_row[5];
