我有以下 PHP 函数，当用户通过表单发布电子邮件地址时，它会尝试使用临时密码在数据库中注册用户：
public function registerNewUser() {
$temp_pass = '';
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$random_string_length=8;
for ($i = 0; $i < $random_string_length; $i++) {
$temp_pass .= $characters[rand(0, strlen($characters) - 1)];
}
if (empty($_POST['user_email'])) {
$this->errors[] = FEEDBACK_EMAIL_FIELD_EMPTY;
} elseif (strlen($_POST['user_email']) > 64) {
$this->errors[] = FEEDBACK_EMAIL_TOO_LONG;
} elseif (!filter_var($_POST['user_email'], FILTER_VALIDATE_EMAIL)) {
$this->errors[] = FEEDBACK_EMAIL_DOES_NOT_FIT_PATTERN;
} elseif (!empty($_POST['user_email'])
&& strlen($_POST['user_email']) <= 64
&& filter_var($_POST['user_email'], FILTER_VALIDATE_EMAIL)) {
$this->user_email = htmlentities($_POST['user_email'], ENT_QUOTES);
$this->user_password = $temp_pass;
$this->hash_cost_factor = (defined('HASH_COST_FACTOR') ? HASH_COST_FACTOR : null);
$this->user_password_hash = password_hash($this->user_password, PASSWORD_DEFAULT, array('cost' => $this->hash_cost_factor));
$sth = $this->db->prepare("SELECT * FROM users WHERE user_email = :user_email ;");
$sth->execute(array(':user_email' => $this->user_email));
$count = $sth->rowCount();
if ($count == 1) {
$this->errors[] = FEEDBACK_USEREMAIL_ALREADY_TAKEN;
} else {
$this->user_activation_hash = sha1(uniqid(mt_rand(), true));
$sth = $this->db->prepare("INSERT INTO users (user_email, user_password_hash, user_activation_hash) VALUES(:user_email, :user_password_hash, :user_activation_hash) ;");
$sth->execute(array(':user_email' => $this->user_email, ':user_password_hash' => $this->user_password_hash, ':user_activation_hash' => $this->user_activation_hash));
$count = $sth->rowCount();
if ($count == 1) {
$this->user_id = $this->db->lastInsertId();
// send a verification email
if ($this->sendVerificationEmail()) {
// when mail has been send successfully
$this->messages[] = FEEDBACK_ACCOUNT_SUCCESSFULLY_CREATED;
$this->registration_successful = true;
return true;
} else {
$sth = $this->db->prepare("DELETE FROM users WHERE user_id = :last_inserted_id ;");
$sth->execute(array(':last_inserted_id' => $this->db->lastInsertId() ));
$this->errors[] = FEEDBACK_VERIFICATION_MAIL_SENDING_FAILED;
}
} else {
$this->errors[] = FEEDBACK_ACCOUNT_CREATION_FAILED;
}
}
} else {
$this->errors[] = FEEDBACK_UNKNOWN_ERROR;
}
// standard return. returns only true of really successful (see above)
return false;
}
我不断触发 FEEDBACK_ACCOUNT_CREATION_FAILED 错误，但不知道为什么。有任何想法吗？