PHP将变量包含到类中

时间:2013-07-15 00:15:35

标签: php

看,我有一个连接到mysql数据库的类,但我有另一个文件,其中包含用户名,主机,密码和表名,如果我不包含它并写它们,它工作正常,但是当我包含它时问题就开始了,它会返回我的#34;未定义的变量"。谢谢,这是我的班级:

<?php
include '../config/conexiongeneral.php';
class DbConnector {
var $theQuery;
var $link;
public function DbConnector(){
        $host = $elnombredelhost;
        $db = $labasededatos;
        $user = $elnombredelusuario;
        $pass = $lacontasena;

        $this->link = mysql_connect($host, $user, $pass);
        mysql_select_db($db);
        register_shutdown_function(array(&$this, 'close'));
}
    function query($query) {

        $this->theQuery = $query;
        return mysql_query($query, $this->link);

    }
    function fetchArray($result) {

        return mysql_fetch_array($result);

    }
    function close() {

        mysql_close($this->link);

    }
}
?>

好吧,我忘记了我用以下方法调用此函数:

<?php
include 'dbConnector.php';
$connector = new DbConnector();

$username = trim(strtolower($_POST['username']));
$username = mysql_real_escape_string($username);
$query = "SELECT usuario FROM $latablatres WHERE usuario = '$username' LIMIT 1";
$result = $connector->query($query);
$num = mysql_num_rows($result);

echo $num;
mysql_close();
?>

2 个答案:

答案 0 :(得分:4)

问题在于你将文件包含在类之外,因此它的范围是错误的(类不知道这些变量)。

试试这个:

public function DbConnector(){
    include '../config/conexiongeneral.php';
    $host = $elnombredelhost;
    $db = $labasededatos;
    $user = $elnombredelusuario;
    $pass = $lacontasena;

    $this->link = mysql_connect($host, $user, $pass);
    mysql_select_db($db);
    register_shutdown_function(array(&$this, 'close'));
}

答案 1 :(得分:1)

使用global关键字使变量在函数内可用。 E.g:

public function DbConnector(){
    global $elnombredelhost;
    $host = $elnombredelhost;
    // ... rest of your code
}

或者,您可以在连接文件中声明连接参数是常量并使用连接脚本中的常量:

在conexiongeneral.php

define('DB_HOST', 'your_db_host');

在您的连接类

public function DbConnector(){
    $host = DB_HOST;
    // ... rest of your code
}