我想显示消息框与javascript的一些条件从数据库，这是一个例子:控制器
$email_cek = $this->model_select->select_member('where email = "$email"');如果($email_cek == 0){$facebook = $this->input->post('facebook');$facebook_cek = $this->model_select->select_member('where facebook = "$facebook"');如果($facebook_cek == 0){//其他脚本其他}{回声"你不能使用那个facebook账户，因为这个账户已经被其他成员使用了!保存失败! ');window.location.href ="会员";"；}其他}{回声"您的电子邮件已被其他会员存在!保存失败! ');window.location.href ="会员";"；} 之前模型公共函数select_member($id="){$data_member = $this->db->query("select * from member ".$id);返回$ data_member -> result_array ();} 之前我有两个窗体twitter和facebook，并在数据库中现有的数据。如果输入类型相同或存在于数据库中，我想根据已经存在的数据显示一条消息。但是为什么邮件消息总是显示在邮件消息框里??
try model:
public function select_member($id=""){
$data = $this->db->query("select * from member ".$id);
return $data;
}
控制器:
$email_cek = $this->model_select->select_member('where email = "$email"');
if($email_cek->num_rows() == 0){
$facebook = $this->input->post('facebook');
$facebook_cek = $this->model_select->select_member('where facebook = "$facebook"');
if($facebook_cek->num_rows() == 0){
//other script
}else{
echo "
alert('You can't use that facebook account because the account has been used by another member! save aborted!');
window.location.href='membership';
";
}
}else{
echo "
alert('Your e-mail is exist by another member! save aborted!');
window.location.href='membership';
";
}