<?php
class DB {
private static $_instance = null;
private $_pdo,
$_query,
$_error = false,
$_results,
$_count = 0;
private function __construct() {
try{
$this-> pdo = new PDO('mysql:host-'. Config::get('mysql/host') . ';dbname-'. Config::get('mysql/db'), Config::get('mysql/username'),Config::get('mysql/password'));
} catch (PODException $e){
die($e->getMessage());
}
}
public static function getInstance() {
if(!isset(self::$_instance)) {
self::$_instance = new DB();
}
return self::$_instance;
}
public function query( $sql, $params = array()) {
$this->_error = false;
if($this->_query = $this->_pdo->prepare($sql)) {
echo 'success';
}
}
}
调用成员函数prepare()对代码上的非对象错误进行协助
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1条回答 默认 最新
- dsfs21312 2014-03-17 09:17关注
Change this code to.
function db() { static $db; if (!$db) { $dsn = 'mysql:host'.Config::get('mysql/host').';dbname'.Config::get('mysql/db'); $db = new PDO($dsn, Config::get('mysql/username'),Config::get('mysql/password')); $db->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION ); } return $db; }
Then call it
$stmt = db()->prepare($sql);
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