我正在重构一个(过程性的)PHP 库，我将一段时间写回一个轻量级 OOP 框架。我正试图传递一个要在类中使用的 PDO 对象。这是我到目前为止所得到的。
Config.php
<?php
class Config {
// Database Variables
private $db_type;
private $db_host;
private $db_user;
private $db_pass;
private $db_name;
private $db_path; // for sqlite database path
private $db_char; // charset
// Site Variables
private $s_protocol;
private $s_subdomain;
private $s_domain;
private $s_tld;
private $s_dir;
private $s_name;
private $s_description;
private $s_path;
private $s_visibility;
private $s_pipe;
private $s_apps;
private $s_hooks;
private $s_blocks;
private $s_assets;
// User Default
private $u_groupid;
public function __construct($config) {
$this->set($config);
}
public function set($config) {
if (!empty($config) && is_array($config)) {
foreach ($config as $k => $v) {
if (property_exists(get_class($this), $k)) {
$this->$k = $v;
}
}
return true;
}
else { return false; }
}
public function get($config) {
if (!empty($config)) {
return $this->$config;
}
}
public function domain() {
return $this->get('s_protocol') .'://'. $this->get('s_domain') . $this->get('s_tld') .'/'. $this->get('s_dir');
}
}
?>
数据库.php
<?php
class Database extends PDO {
private $config;
public function __construct($config) {
$this->config = $config;
switch($this->config->get('db_type')) {
case 'mysql':
case 'pgsql':
try {
return new PDO(
$this->config->get('db_type') .':dbname='. $this->config->get('db_name') .';host='. $this->config->get('db_host'),
$this->config->get('db_user'),
$this->config->get('db_pass')
);
}
catch(PDOException $e) {
die($e->getMessage());
}
break;
case 'sqlite':
try {
return new PDO($this->config->get('db_type') .':'. $this->config->get('db_path'));
}
catch(PDOException $e) {
die($e->getMessage());
}
break;
case 'firebird':
try {
return new PDO(
$this->config->get('db_type') .':dbname='. $this->config->get('db_host') .':'. $this->config->get('db_path'),
$this->config->get('db_user'),
$this->config->get('db_pass')
);
}
catch(PDOException $e) {
die($e->getMessage());
}
break;
case 'informix':
try {
return new PDO(
$this->config->get('db_type') .':DSN='. $this->config->get('db_name'),
$this->config->get('db_user'),
$this->config->get('db_pass')
);
}
catch(PDOException $e) {
die($e->getMessage());
}
break;
case 'oracle':
try {
return new PDO(
'OCI:dbname='. $this->config->get('db_name') .';charset='. $this->config->get('db_char'),
$this->config->get('db_user'),
$this->config->get('db_pass')
);
}
catch(PDOException $e) {
die($e->getMessage());
}
break;
}
}
}
?>
Auth.php
<?php
class Auth {
// Set Database object
protected $db;
// User fields in users table
private $id;
private $email;
private $password;
private $firstname;
private $lastname;
private $displayname;
private $groupid;
private $ip;
private $created;
private $updated;
private $cookie;
private $sessionid;
private $lastlogin;
private $token;
private $active;
public function __construct($dbh) {
$this->db = $dbh;
}
public function add($params) {
$sql = '
INSERT INTO
`users` (
';
$cols = array_keys($params);
$col_string = implode(', ', $cols);
$sql .= $col_string .'
)
VALUES (
';
array_walk($cols, function(&$v, $k) { $v = ':'. $v; });
$col_string = implode(', ', $cols);
$sql .= $col_string .'
)
';
$stmt = $this->db->prepare($sql);
$stmt->execute($params);
}
public function remove($params) {
}
public function update($params) {
}
public function get($params) {
}
protected function set($params) {
if (!empty($params) && is_array($params)) {
foreach ($params as $k => $v) {
if (property_exists(get_class($this), $k)) {
$this->$k = $v;
}
}
return true;
}
else { return false; }
}
}
?>
初始化文件
<?php
session_start();
$params = array(
'db_type' => 'mysql',
'db_host' => '127.0.0.1',
'db_user' => 'user',
'db_pass' => 'password',
'db_name' => 'database',
'u_groupid' => 4
);
require_once('Config.php'); $c = new Config($params);
require_once('Database.php'); $db = new Database($c);
require_once('Auth.php'); $u = new Auth($db);
$user = array(
'email' => 'newperson@email.com',
'password' => md5('password'),
'firstname' => 'Jeff',
'lastname' => 'Wilson',
'displayname' => 'Jeff Wilson',
'groupid' => $c->get('u_groupid'),
'ip' => $_SERVER['REMOTE_ADDR'],
'created' => date('Y-m-d H:i:s'),
'sessionid' => session_id(),
'active' => 1,
);
$u->add($user);
?>
PHP Fatal error: Call to a member function execute() on a non-object in Auth.php on line 46
这是第 46 行:
$stmt->执行($params);
据我所知，我正在将 PDO 对象正确传递给 Auth 类。它不应该说它是一个非对象。其他人能看出这里出了什么问题吗？
最佳答案
数据库类中的构造函数正在返回一个值(一个 PDO 对象)。 __construct() 函数不应显式返回值。由于您的数据库类扩展了 PDO，因此改为调用父构造函数:
parent::__construct(
$this->config->get('db_type') .':dbname='. $this->config->get('db_name') .';host='. $this->config->get('db_host'),
$this->config->get('db_user'),
$this->config->get('db_pass')
);
关于php - 将 PDO 对象传递到类中 - PHP fatal error : Call to a member function execute() on a non-object，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33980370/