[英]Unable to throw error Message
報名表格
<!DOCTYPE HTML>
<html>
<head>
<title>Register</title>
</head>
<body>
<form action="" method="POST">
Name:
<input type="text" name="name">
<br/> <br/>
Username:
<input type="text" name="username">
<br/> <br/>
Password:
<input type="password" name="password">
<br/> <br/>
Email:
<input type="text" name="email">
<br/> <br/>
<input type="submit" name="submit" value="Register">
</form>
</body>
</html>
<?php
require('connect.php');
require('validation.php');
$name = $_POST['name'];
$username = $_POST['username'];
$password = $_POST['password'];
$email = $_POST['email'];
if(isset($_POST["submit"])){
if($query = mysqli_query($connect,"INSERT INTO users
(`id`,`name`,`username`, `password`, `email`) VALUES ('','".$name."',
'".$username."', '".$password."', '".$email."')")){
echo "Success";
}else{
echo "Failure" . mysqli_error($connect);
}
}
?>
validation.php
<?php
// define variables and set to empty values
$nameErr = $emailErr = $userErr = $passwordErr = "";
$name = $email = $username =$password = "";
if (isset($_POST['submit'])) {
if (empty($_POST["name"])) {
$nameErr = "Name is required";
} else {
$name = test_input($_POST["name"]);
// check if name only contains letters and whitespace
if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
$nameErr = "Only letters and white space allowed";
}
}
if (empty($_POST["email"])) {
$emailErr = "Email is required";
} else {
$email = test_input($_POST["email"]);
// check if e-mail address is well-formed
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$emailErr = "Invalid email format";
}
}
if (empty($_POST["username"])) {
$userErr = "Username is required";
} else {
$username = test_input($_POST["username"]);
}
if (empty($_POST["password"])) {
$passwordErr = "Password is required";
} else {
$password= test_input($_POST["password"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
connect.php
<?php
$connect = mysqli_connect("localhost", "root", "","php_forum")
or die("Error " . mysqli_error($connect));
?>
我正在使用四個輸入來開發一個簡單的注冊,即名稱,用戶名,密碼,電子郵件。當用戶填寫表格並單擊提交按鈕時,所有填寫的數據都應保存在數據庫中,這在我的數據庫中可以正常工作情況下,但是當用戶不會填寫任何數據並且如果用戶只是單擊提交按鈕時,錯誤消息應該顯示為“所有字段都是必需的”,但是在我的情況下,即使我單擊提交按鈕而未輸入任何值,消息我越來越成功,所有空值都將存儲在數據庫中,這是不應該發生的,我的輸出應該是:如果我填寫表格n單擊提交按鈕,那么所有數據都應該存儲在數據庫中,如果我單擊提交按鈕如果不填寫任何值,則錯誤應拋出“要填寫的所有字段”,並且數據庫中不應存儲任何空值,請任何人都可以指導我應進行哪些更改,以便獲得所需的輸出。
你做
require('validation.php');
設置和檢查很多變量,例如
$name = test_input($_POST["name"]);
$nameErr = "Only letters and white space allowed";
從require返回並用原始發布的值覆蓋$ name,而對$ nameErr不做任何事情
$name = $_POST['name'];
要求后檢查錯誤
例如
require('validation.php');
$lsError = $nameErr . $emailErr . $userErr . $passwordErr;
if(trim($lsError) != '') {
echo $lsError ."<BR>";
echo "ALL FIELDS ARE NECESSARY";
}
else {
//rest of your insert
}
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