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PHP致命错误:require_once():必须打开失败

[英]PHP Fatal error: require_once(): Failed opening required

UPDATE谢谢您,解决了该问题,但是现在我收到此错误“连接尝试失败,因为一段时间后连接方未正确响应,或者由于连接的主机未能响应而建立连接失败。”我关闭了防火墙而且我没有任何防病毒软件

我正在按照本教程将android app连接到数据库http://www.androidhive.info/2012/05/how-to-connect-android-with-php-mysql/

我将我的php文件托管在WAMPSERVER PHP版本5.4.3中,我遇到了两个错误我已经尝试修复了几个小时的错误,但是运气不好,请您帮我修复一下

“警告:require_once(C:\\ wamp \\ wwwC:\\ wamp \\ www \\ db_connect.php):无法打开流:第12行的C:\\ wamp \\ www \\ get_property_details.php中的参数无效”

和这个错误

“严重错误:require_once():无法在C:\\ wamp \\ www \\中打开所需的'C:\\ wamp \\ wwwC:\\ wamp \\ www \\ db_connect.php'(include_path ='.; C:\\ php \\ pear')第12行的get_property_details.php”

这些是我的文件db_config.php

define('DB_USER', "student"); 
define('DB_PASSWORD', "student2"); 
define('DB_DATABASE', "test"); 
define('DB_SERVER', "student.database.university.ac.uk"); 
?>

db_connect.php

<?php


class DB_CONNECT {

    function __construct() {

        $this->connect();
    }


    function __destruct() {

        $this->close();
    }


    function connect() {

       require_once __DIR__ . "C:\\wamp\\www\\db_config.php";

        $con = mysql_connect(DB_SERVER, DB_USER, DB_PASSWORD) or die(mysql_error());

        $db = mysql_select_db(DB_DATABASE) or die(mysql_error()) or die(mysql_error());

        return $con;
    }


    function close() {

        mysql_close();
    }

}

?>

get_student_details.php

<?php

/*
 * Following code will get single student details
 * A student is identified by student id (student_id)
 */

// array for JSON response
$response = array();

// include db connect class
require_once __DIR__ . "C:\\wamp\\www\\db_connect.php";

// connecting to db
$db = new DB_CONNECT();

// check for post data
if (isset($_GET["student_id"])) {
    $student_id = $_GET['student_id'];

    // get a student from students table
    $result = mysql_query("SELECT * FROM TABLE_STUDENT WHERE student_id = $student_id");

    if (!empty($result)) {
        // check for empty result
        if (mysql_num_rows($result) > 0) {

            $result = mysql_fetch_array($result);

            $student = array();
            $student["student_id"] = $result["student_id"];
            $student["student_fname"] = $result["student_fname"];
            $student["student_lastName"] = $result["student_lastName"];
            $student["address"] = $result["address"];
            $student["postcode"] = $result["postcode"];
            $student["grade"] = $result["grade"];

            // success
            $response["success"] = 1;

            // user node
            $response["student"] = array();

            array_push($response["student"], $student);

            // echoing JSON response
            echo json_encode($response);
        } else {
            // no student found
            $response["success"] = 0;
            $response["message"] = "No student found";

            // echo no users JSON
            echo json_encode($response);
        }
    } else {
        // no student found
        $response["success"] = 0;
        $response["message"] = "No student found";

        // echo no users JSON
        echo json_encode($response);
    }
} else {
    // required field is missing
    $response["success"] = 0;
    $response["message"] = "Required field(s) is missing";

    // echoing JSON response
    echo json_encode($response);
}
?>
require_once __DIR__ . "C:\\wamp\\www\\db_config.php";

上一行是您的问题。 您输入的路径错误,因为您告诉PHP该文件​​位于当前目录中,并且位于名为“ C:\\ wamp \\ www \\ db_config.php”的路径中,这显然是错误的。

您的解决方法可能是删除__DIR__ ,这是不必要的,因为您似乎已经对文件具有完整模式了:

require_once "C:\\wamp\\www\\db_config.php"

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