无法在 PHP MVC 框架中实例化 PDO 对象
谁能帮我解决这个问题吗？
我在单例类中有这个函数。它给我返回的错误是它找不到该类。
首先我认为这与自动加载器有关，但我做了 spl_autoload_unregister('libloader') 并且它仍然给出相同的错误？
主机正在运行 php 5。
public static function getInstantie()
{
if (!self::$instantie)
{
$config = config::getInstantie();
$db_type = $config->config_waarden['database']['db_type'];
$hostnaam = $config->config_waarden['database']['db_hostnaam'];
$dbnaam = $config->config_waarden['database']['db_naam'];
$db_wachtwoord = $config->config_waarden['database']['db_wachtwoord'];
$db_gebruikersnaam = $config->config_waarden['database']['db_gebruikersnaam'];
$db_poort = $config->config_waarden['database']['db_poort'];
self::$instantie = new PDO("$db_type:host=$hostnaam;port=$db_poort;dbname=$dbnaam",$db_gebruikersnaam, $db_wachtwoord);
self::$instantie-> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
return self::$instantie;
}
谢谢，理查德
Can anyone help me with this?
I have this function in a singleton class. The error it is giving me back is that it cannot find the class.
First I thought it had something to do with the autoloader, but I did spl_autoload_unregister('libloader') and it still gives the same error?
The host is running php 5.
public static function getInstantie()
{
if (!self::$instantie)
{
$config = config::getInstantie();
$db_type = $config->config_waarden['database']['db_type'];
$hostnaam = $config->config_waarden['database']['db_hostnaam'];
$dbnaam = $config->config_waarden['database']['db_naam'];
$db_wachtwoord = $config->config_waarden['database']['db_wachtwoord'];
$db_gebruikersnaam = $config->config_waarden['database']['db_gebruikersnaam'];
$db_poort = $config->config_waarden['database']['db_poort'];
self::$instantie = new PDO("$db_type:host=$hostnaam;port=$db_poort;dbname=$dbnaam",$db_gebruikersnaam, $db_wachtwoord);
self::$instantie-> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
return self::$instantie;
}
thanks, Richard
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默认情况下，通过一组数据库驱动程序启用 PDO：
http://au。 php.net/manual/en/pdo.installation.php
但是您正在使用的 PHP 版本可能会禁用它。自动加载对于是否找到 PDO 类没有影响。
创建一个 PHP 信息文件并检查 PDO 部分是否存在。如果没有，那么您的问题很可能是因为它没有内置到您的 php 安装中。
PDO is enabled by default with a set of database drivers:
http://au.php.net/manual/en/pdo.installation.php
But the build of PHP you are working with could have it disabled. Autoloading will have no effect on whether or not the PDO class will be found.
Create a PHP info file and check to see if the PDO section exists. If it doesn't, then your issue is most likely because it wasn't built into your php installation.
该函数是在扩展 PDO 的类中吗？如果没有，您是否可以尝试在扩展 PDO 的类中创建该函数，而不是使用关键字
parent调用函数，而不是self？is that function inside of a class that extends PDO? If not, can you try to make that function inside of a class that extends PDO and instead of
selfcall the functions using keywordparent?