php文件包含不同目錄中的文件

Question

我目前正在嘗試將一個文件包含到另一個文件中，它們位於結構類似的兩個單獨目錄中。

public_html
     \includes
         \check_login_status.php
         \db_connect.php
      \users
          \users.php

我想將check_login_status.php包含到user.php 。

我這樣做是為了包括include_once("/public_html/includes/check_login_status.php");

我覺得這應該工作，但是所有依賴於include的變量在調試時都返回null。 還有另一種方法可以包含與您所在目錄處於同一級別的目錄中的文件嗎？

check_login_status.php

<?php
session_start();
include_once("/db_connnect.php");
// Files that inculde this file at the very top would NOT require 
// connection to database or session_start(), be careful.
// Initialize some vars
$user_ok = false;
$log_id = "";
$log_username = "";
$log_password = "";
// User Verify function
function evalLoggedUser($conx,$id,$u,$p){
    $sql = "SELECT ip FROM users WHERE id='$id' AND username='$u' AND password='$p' AND activated='1' LIMIT 1";
    $query = mysqli_query($conx, $sql);
    $numrows = mysqli_num_rows($query);
    if($numrows > 0){
        return true;
    }
}
if(isset($_SESSION["userid"]) && isset($_SESSION["username"]) && isset($_SESSION["password"])) {
    $log_id = preg_replace('#[^0-9]#', '', $_SESSION['userid']);
    $log_username = preg_replace('#[^a-z0-9]#i', '', $_SESSION['username']);
    $log_password = preg_replace('#[^a-z0-9]#i', '', $_SESSION['password']);
    // Verify the user
    $user_ok = evalLoggedUser($db_connect,$log_id,$log_username,$log_password);
} else if(isset($_COOKIE["id"]) && isset($_COOKIE["user"]) && isset($_COOKIE["pass"])){
    $_SESSION['userid'] = preg_replace('#[^0-9]#', '', $_COOKIE['id']);
    $_SESSION['username'] = preg_replace('#[^a-z0-9]#i', '', $_COOKIE['user']);
    $_SESSION['password'] = preg_replace('#[^a-z0-9]#i', '', $_COOKIE['pass']);
    $log_id = $_SESSION['userid'];
    $log_username = $_SESSION['username'];
    $log_password = $_SESSION['password'];
    // Verify the user
    $user_ok = evalLoggedUser($db_connect,$log_id,$log_username,$log_password);
    if($user_ok == true){
        // Update their lastlogin datetime field
        $sql = "UPDATE users SET lastlogin=now() WHERE id='$log_id' LIMIT 1";
        $query = mysqli_query($db_connnect, $sql);
    }
}
?>

db_connect.php

<?php
$db_connect = mysqli_connect("localhost", "formfitdata", "**********", "formfit_users");
//check if connection error
if (mysqli_connect_errno()){
    echo mysqli_connect_error();
    exit();
}


?>

Answer 1

嘗試這個：

include_once("../includes/check_login_status.php");

public_html可能不在服務器的根文件夾中。

Answer 2

// users.php
include_once __DIR__ ."/../includes/check_login_status.php"

嘗試使用魔術常數__DIR__使其成為絕對路徑。

相對路徑將相對於調用腳本進行評估； 例如，如果您在index.php中包含users.php，則可能會導致意外的行為：

例如

public_html
  index.php // include "/users/users.php"
  \includes
    check_login_status.php
  \users
    users.php // include "../includes/check_login_status.php"

將使index.php包含不存在的“ public_html /../ includes / check_login ...”。

Answer 3

我認為您正在尋找的可能是：

include "/path/to/my/file.php";