我有 3 个网页，一个用于登录，一个用于注册，最后一个是主页（索引）。我有 2 个来自登录的变量和 5 个来自注册的变量，所有变量都被发送到主页，因此当我在登录变量中注册时没有值，因此会出现错误“注意未定义的索引” ，当我注册时，也会发生同样的情况，但错误显示了登录的变量。我在谷歌上进行了很多搜索，发现了一个名为 unset 的函数来禁用变量，但没有任何反应。// Sous WAMP$bdd = new PDO('mysql:host=localhost;dbname=test exbook;charset=utf8', 'root', '');$reponse = $bdd->query('SELECT * FROM registration');$nom = $_POST['nom'];$birthday = $_POST['birthday'];$genre = $_POST['genre'];$email = $_POST['email'];$password = password_hash($_POST['password'], PASSWORD_DEFAULT);if (isset($nom , $birthday , $genre , $email, $password )) { unset($nom); unset($birthday); unset($genre); unset($email); unset($password);} else { $req = $bdd->prepare('INSERT INTO registration(`Nom`, `Date de naissance`, `Genre`, `Email`, `Password`) VALUES(?,?,?,?,?)'); $req->execute(array($nom, $birthday, $genre, $email, $password));}while ($donnees = $reponse->fetch()) { echo $donnees['Nom'];}$bdd = new PDO('mysql:host=localhost;dbname=test exbook;charset=utf8', 'root', '');$emailsignup = $_POST['emailsignup'];if (isset($emailsignup)) { unset($emailsignup);} else{ $bdd1 = $bdd->query('SELECT * FROM registration WHERE $emailsignup');}感谢您阅读本文并尽力提供帮助。祝你今天过得愉快 ：）
1 回答
倚天杖
TA贡献1828条经验 获得超3个赞
未定义索引错误来自 $_POST 变量。当您尝试emailsignup参数nom, birthday...时，$_POST 数组中不存在。你可以这样做：
// Sous WAMP
$bdd = new PDO('mysql:host=localhost;dbname=test exbook;charset=utf8', 'root', '');
$reponse = $bdd ->query('SELECT * FROM registration');
$hasnom=isset($_POST['nom']);
$hasbirthday=isset($_POST['birthday']);
$hasgenre=isset($_POST['genre']);
$hasemail=isset($_POST['email']);
$haspass = $isset($_POST['pass']);
if ($hasnom && $hasbirthday && $hasgenre && hasemail && haspass) {
$nom=$_POST['nom'];
$birthday=$_POST['birthday'];
$genre=$_POST['genre'];
$email=$_POST['email'];
$password=password_hash($_POST['password'], PASSWORD_DEFAULT);
$req = $bdd ->prepare('INSERT INTO registration(`Nom`, `Date de naissance`, `Genre`, `Email`, `Password`) VALUES(?,?,?,?,?)');
$req->execute(array($nom,$birthday,$genre,$email,$password));
}
while ($donnees = $reponse->fetch())
{
echo $donnees['Nom'];
}
?>
<?php
$bdd = new PDO('mysql:host=localhost;dbname=test exbook;charset=utf8', 'root', '');
$hasemailsignup=isset($_POST['emailsignup']);
if ($hasemailsignup) {
$emailsignup = $_POST['emailsignup'];
$bdd1=$bdd ->query('SELECT * FROM registration WHERE $emailsignup');
}
?>
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