以下代码无法正常运行:
$query = $this->db->query("SELECT accountType FROM users WHERE id = $loggedID" );
如果$loggedID
是像" justin"这样的单词,则会出错,但如果它的唯一数字如201110523,则可行。我不知道出了什么问题。用户中id的数据类型是varchar。
public function account_type_student(){
$loggedID = $this->input->post('id');
$query = $this->db->query("SELECT accountType FROM users WHERE id = $loggedID" );
foreach ($query->result() as $row)
{
$query = $row->accountType;
}
if($query=="student"){
return true;
}
else{
return false;
}
}
答案 0 :(得分:2)
当它是像“justin”这样的单词/字符串时,你必须转义变量:
$query = $this->db->query("SELECT accountType FROM users WHERE id = '$loggedID' " );
或使用活动模式语法:
$this->db->select('accountType');
$this->db->where('id', $loggedID);
$query = $this->db->get('users');