Question

我想创建一个CRUD类，用于插入，更新和删除数据，在__contruct函数中，我不想调用连接，我只会指定连接名称，然后我得到这个错误：

PHP致命错误：调用成员函数prepare （）在第60行的crud.php中的非对象上

<?php

/* Start (config.php)
This part of code is only to show you that the connection name is "connexion" which is called in config.php

$connexion = new PDO('mysql:host='.$db_host.';dbname='.$db_name, $db_user, $db_passwd
        , array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES '.$db_charset.'')); //SET NAMES utf8
$connexion->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_WARNING);

EnD */

classDB.php

require_once('config.php');

final class crud {

    public function __construct($connexionName) {

        $this->connexionName  = $connexionName;
    }

    public final function insert($tableName, $fields=array()){

        $this->tableName = $tableName;
        $this->fields    = $fields;

        foreach ($this->fields as $kf => $vf) {

            $inKeys[]       = $kf;
            $inKeysDotted[] = ':' . $kf;

            $insertedKeys       = implode(', ', $inKeys);
            $insertedKeysDotted = implode(', ', $inKeysDotted);


        }

            echo '<br />';

        $sql = "INSERT INTO $this->tableName ($insertedKeys) VALUES ($insertedKeysDotted)";
        $insertItems = $this->connexionName->prepare("$sql"); // THIS IS LINE 60

        echo 'insert '.$insertItems.'<br />';

} // end insert()


} // end CRUD


$con = new crud($connexion);

echo '<br />';

$con->insert('ban_ip', array('visitor_type'=>'5', 'ip'=>'111.222.333.444'));

?>

提前致谢

无法使用类执行准备好的查询

0 个答案: