将函数内的值绑定到INSERT INTO DB [英] Binding values within a function to INSERT INTO DB

问题描述

让我说我有这段代码:

$array = array('one' => $one, 'two' => $two);
$sql->sql_insert('table_name', $array);

我有类对象 $ sql 和函数 sql_insert ，但是我将如何使用mysqli准备的语句来绑定值并将其插入到db中呢?并说 mysqli连接是 $ this->连接

I have the class object $sql and the function sql_insert but how would I use the mysqli prepared statements to bind the values and insert it into the db? And lets say the mysqli connection is $this->connection

任何建议都将非常感谢.

Any advice would be great thanks.

function sql_insert_bind($table, $insert){

    $count = count($insert);
    $bind_val = '';
    for($i = 0; $i <= $count; $i++){

        $bind_val .= '?, ';
    }

    $query = $this->connection->prepare('INSERT INTO `'.$table.'` VALUES ('.substr($bind_val, 0, -2).')');

    foreach($insert as $key => $value){

        $query->bind_param($key, $value);
    }

    $query->execute();
}

我收到错误消息:致命错误:在非对象上调用成员函数bind_param()，但是 $ this-> connection 是mysqli对象

I get the error message: Fatal error: Call to a member function bind_param() on a non-object but $this->connection is the mysqli object

推荐答案

好的，这就是我要使用PDO处理此问题的方法(因为要求OP)

Ok, here's how I would approach this with PDO (since OP asked)

我假定您已将PDO对象作为 $ connection 属性实例化或注入到您的类中，例如

I'll assume you've instantiated or injected a PDO object into your class as the $connection property, eg

class SQLClass {
    /**
     * @var PDO
     */
    private $connection;

    public function __construct(PDO $pdo) {
        $this->connection = $pdo;
    }

    // etc
}

$pdo = new PDO('mysql:host=localhost;dbname=db_name;charset=utf8', 'username', 'password', array(
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_EMULATE_PREPARES => false,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC));

$sql = new SQLClass($pdo); 

然后，在您的 sql_insert_bind 方法中

$keys = array_keys($insert);

$cols = array_map(function($key) {
    return sprintf('`%s`', $key);
}, $keys);

$placeholders = array_map(function($key) {
    return sprintf(':%s', $key);
}, $keys);

$params = array_combine($placeholders, $insert);

$query = sprintf('INSERT INTO `%s` (%s) VALUES (%s)',
    $table, implode(',', $cols), implode(',', $placeholders));

$stmt = $this->connection->prepare($query);
$stmt->execute($params);

这篇关于将函数内的值绑定到INSERT INTO DB的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！