PDO.php

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<?php
 
namespace Sabre\DAV\Auth\Backend;
 
class PDO extends AbstractDigest {
 
    protected $pdo;
 
    public $tableName = 'users';
 
 
    function __construct(\PDO $pdo) {
 
        $this->pdo = $pdo;
 
    }
 
    function getDigestHash($realm, $username) {
 
        $stmt = $this->pdo->prepare('SELECT digesta1 FROM ' . $this->tableName . ' WHERE username = ?');
        $stmt->execute([$username]);
        return $stmt->fetchColumn() ?: null;
 
    }
 
}